690016728 has 32 divisors (see below), whose sum is σ = 1735023600. Its totient is φ = 228674688.

The previous prime is 690016703. The next prime is 690016793. The reversal of 690016728 is 827610096.

It is a super-2 number, since 2×690016728² = 952246169839651968, which 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, 78943 + ... + 87246.

Almost surely, 2^690016728 is an apocalyptic number.

It is an amenable number.

690016728 is an abundant number, since it is smaller than the sum of its proper divisors (1045006872).

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

690016728 is a wasteful number, since it uses less digits than its factorization.

690016728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166371 (or 166367 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 690016728 is about 26268.1694832358. The cubic root of 690016728 is about 883.6627331444.

The spelling of 690016728 in words is "six hundred ninety million, sixteen thousand, seven hundred twenty-eight".