690555500 has 24 divisors (see below), whose sum is σ = 1508174304. Its totient is φ = 276222000.

The previous prime is 690555499. The next prime is 690555517. The reversal of 690555500 is 5555096.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 690056 + ... + 691055.

It is an arithmetic number, because the mean of its divisors is an integer number (62840596).

Almost surely, 2^690555500 is an apocalyptic number.

It is an amenable number.

690555500 is an abundant number, since it is smaller than the sum of its proper divisors (817618804).

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

690555500 is a wasteful number, since it uses less digits than its factorization.

690555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381130 (or 1381118 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 690555500 is about 26278.4227076132. The cubic root of 690555500 is about 883.8926642266.

The spelling of 690555500 in words is "six hundred ninety million, five hundred fifty-five thousand, five hundred".