701820 has 72 divisors (see below), whose sum is σ = 2437344. Its totient is φ = 160128.

The previous prime is 701819. The next prime is 701837. The reversal of 701820 is 28107.

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 = 701793 and 701802.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 701820.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 982 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2⁷⁰¹⁸²⁰ is an apocalyptic number.

701820 is a gapful number since it is divisible by the number (70) 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 701820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218672).

701820 is an abundant number, since it is smaller than the sum of its proper divisors (1735524).

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

701820 is a wasteful number, since it uses less digits than its factorization.

701820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 701820 is about 837.7469785084. The cubic root of 701820 is about 88.8672852591.

Adding to 701820 its reverse (28107), we get a palindrome (729927).

It can be divided in two parts, 701 and 820, that added together give a square (1521 = 39²).

The spelling of 701820 in words is "seven hundred one thousand, eight hundred twenty".