690158660 has 24 divisors (see below), whose sum is σ = 1525614720. Its totient is φ = 261533664.

The previous prime is 690158647. The next prime is 690158671. The reversal of 690158660 is 66851096.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907724 + ... + 908483.

It is an arithmetic number, because the mean of its divisors is an integer number (63567280).

Almost surely, 2^690158660 is an apocalyptic number.

It is an amenable number.

690158660 is an abundant number, since it is smaller than the sum of its proper divisors (835456060).

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

690158660 is a wasteful number, since it uses less digits than its factorization.

690158660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816235 (or 1816233 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 690158660 is about 26270.8709410252. The cubic root of 690158660 is about 883.7233169030.

The spelling of 690158660 in words is "six hundred ninety million, one hundred fifty-eight thousand, six hundred sixty".