690641472 has 28 divisors (see below), whose sum is σ = 1827322736. Its totient is φ = 230213760.

The previous prime is 690641437. The next prime is 690641491. The reversal of 690641472 is 274146096.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 690641472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798354 + ... + 1798737.

Almost surely, 2^690641472 is an apocalyptic number.

It is an amenable number.

690641472 is an abundant number, since it is smaller than the sum of its proper divisors (1136681264).

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

690641472 is a wasteful number, since it uses less digits than its factorization.

690641472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597106 (or 3597096 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 690641472 is about 26280.0584474236. The cubic root of 690641472 is about 883.9293433286.

The spelling of 690641472 in words is "six hundred ninety million, six hundred forty-one thousand, four hundred seventy-two".