11700640 has 96 divisors (see below), whose sum is σ = 32707584. Its totient is φ = 3870720.

The previous prime is 11700613. The next prime is 11700643. The reversal of 11700640 is 4600711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11700643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34552 + ... + 34888.

It is an arithmetic number, because the mean of its divisors is an integer number (340704).

Almost surely, 2^11700640 is an apocalyptic number.

11700640 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 11700640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16353792).

11700640 is an abundant number, since it is smaller than the sum of its proper divisors (21006944).

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

11700640 is a wasteful number, since it uses less digits than its factorization.

11700640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 11700640 is about 3420.6198268735. The cubic root of 11700640 is about 227.0230073648.

The spelling of 11700640 in words is "eleven million, seven hundred thousand, six hundred forty".