690626729172 has 24 divisors (see below), whose sum is σ = 1706254272576. Its totient is φ = 216667209088.

The previous prime is 690626729167. The next prime is 690626729173. The reversal of 690626729172 is 271927626096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690626729173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692712368 + ... + 1692712775.

It is an arithmetic number, because the mean of its divisors is an integer number (71093928024).

Almost surely, 2^690626729172 is an apocalyptic number.

It is an amenable number.

690626729172 is an abundant number, since it is smaller than the sum of its proper divisors (1015627543404).

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

690626729172 is a wasteful number, since it uses less digits than its factorization.

690626729172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385425167 (or 3385425165 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 690626729172 in words is "six hundred ninety billion, six hundred twenty-six million, seven hundred twenty-nine thousand, one hundred seventy-two".