11701620 has 144 divisors (see below), whose sum is σ = 41827968. Its totient is φ = 2592000.

The previous prime is 11701609. The next prime is 11701639. The reversal of 11701620 is 2610711.

11701620 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11701593 and 11701602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46495 + ... + 46745.

It is an arithmetic number, because the mean of its divisors is an integer number (290472).

Almost surely, 2^11701620 is an apocalyptic number.

11701620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11701620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20913984).

11701620 is an abundant number, since it is smaller than the sum of its proper divisors (30126348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11701620 is a wasteful number, since it uses less digits than its factorization.

11701620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 11701620 is about 3420.7630727661. The cubic root of 11701620 is about 227.0293453753.

Subtracting from 11701620 its reverse (2610711), we obtain a palindrome (9090909).

It can be divided in two parts, 11701 and 620, that added together give a palindrome (12321).

The spelling of 11701620 in words is "eleven million, seven hundred one thousand, six hundred twenty".