697577749438 has 16 divisors (see below), whose sum is σ = 1054945490400. Its totient is φ = 345936169696.

The previous prime is 697577749423. The next prime is 697577749459. The reversal of 697577749438 is 834947775796.

It is a super-2 number, since 2×697577749438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527106 + ... + 1930597.

It is an arithmetic number, because the mean of its divisors is an integer number (65934093150).

Almost surely, 2^697577749438 is an apocalyptic number.

697577749438 is a deficient number, since it is larger than the sum of its proper divisors (357367740962).

697577749438 is a wasteful number, since it uses less digits than its factorization.

697577749438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458531.

The product of its digits is 2240421120, while the sum is 76.

The spelling of 697577749438 in words is "six hundred ninety-seven billion, five hundred seventy-seven million, seven hundred forty-nine thousand, four hundred thirty-eight".