697720126972 has 24 divisors (see below), whose sum is σ = 1332035066880. Its totient is φ = 317139818160.

The previous prime is 697720126963. The next prime is 697720126979. The reversal of 697720126972 is 279621027796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697720126979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3238179 + ... + 3446917.

It is an arithmetic number, because the mean of its divisors is an integer number (55501461120).

Almost surely, 2^697720126972 is an apocalyptic number.

It is an amenable number.

697720126972 is a deficient number, since it is larger than the sum of its proper divisors (634314939908).

697720126972 is a wasteful number, since it uses less digits than its factorization.

697720126972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284721 (or 284719 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 58.

The spelling of 697720126972 in words is "six hundred ninety-seven billion, seven hundred twenty million, one hundred twenty-six thousand, nine hundred seventy-two".