697023981920 has 96 divisors (see below), whose sum is σ = 1888388728128. Its totient is φ = 238163908608.

The previous prime is 697023981811. The next prime is 697023981943. The reversal of 697023981920 is 29189320796.

It is a super-2 number, since 2×697023981920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733859 + ... + 1390178.

It is an arithmetic number, because the mean of its divisors is an integer number (19670715918).

Almost surely, 2^697023981920 is an apocalyptic number.

It is an amenable number.

697023981920 is an abundant number, since it is smaller than the sum of its proper divisors (1191364746208).

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

697023981920 is a wasteful number, since it uses less digits than its factorization.

697023981920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124352 (or 2124344 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 697023981920 in words is "six hundred ninety-seven billion, twenty-three million, nine hundred eighty-one thousand, nine hundred twenty".