690508914 has 16 divisors (see below), whose sum is σ = 1381363200. Its totient is φ = 230112080.

The previous prime is 690508909. The next prime is 690508943. The reversal of 690508914 is 419805096.

It is a Curzon 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, 16804 + ... + 40784.

It is an arithmetic number, because the mean of its divisors is an integer number (86335200).

Almost surely, 2^690508914 is an apocalyptic number.

690508914 is an abundant number, since it is smaller than the sum of its proper divisors (690854286).

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

690508914 is a wasteful number, since it uses less digits than its factorization.

690508914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28785.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 690508914 is about 26277.5363000415. The cubic root of 690508914 is about 883.8727874995.

The spelling of 690508914 in words is "six hundred ninety million, five hundred eight thousand, nine hundred fourteen".