690663500 has 24 divisors (see below), whose sum is σ = 1508410176. Its totient is φ = 276265200.

The previous prime is 690663469. The next prime is 690663559. The reversal of 690663500 is 5366096.

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, 690164 + ... + 691163.

It is an arithmetic number, because the mean of its divisors is an integer number (62850424).

Almost surely, 2^690663500 is an apocalyptic number.

It is an amenable number.

690663500 is an abundant number, since it is smaller than the sum of its proper divisors (817746676).

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

690663500 is a wasteful number, since it uses less digits than its factorization.

690663500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381346 (or 1381334 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 690663500 is about 26280.4775451284. The cubic root of 690663500 is about 883.9387408667.

The spelling of 690663500 in words is "six hundred ninety million, six hundred sixty-three thousand, five hundred".