690426872260 has 12 divisors (see below), whose sum is σ = 1449896431788. Its totient is φ = 276170748896.

The previous prime is 690426872143. The next prime is 690426872351. The reversal of 690426872260 is 62278624096.

It can be written as a sum of positive squares in 2 ways, for example, as 99770066496 + 590656805764 = 315864^2 + 768542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 690426872198 and 690426872207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17260671787 + ... + 17260671826.

It is an arithmetic number, because the mean of its divisors is an integer number (120824702649).

Almost surely, 2^690426872260 is an apocalyptic number.

It is an amenable number.

690426872260 is an abundant number, since it is smaller than the sum of its proper divisors (759469559528).

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

690426872260 is a wasteful number, since it uses less digits than its factorization.

690426872260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521343622 (or 34521343620 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 690426872260 in words is "six hundred ninety billion, four hundred twenty-six million, eight hundred seventy-two thousand, two hundred sixty".