690646474 has 24 divisors (see below), whose sum is σ = 1206052740. Its totient is φ = 295759296.

The previous prime is 690646469. The next prime is 690646483. The reversal of 690646474 is 474646096.

690646474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 501446449 + 189200025 = 22393^2 + 13755^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193942 + ... + 197470.

Almost surely, 2^690646474 is an apocalyptic number.

690646474 is a deficient number, since it is larger than the sum of its proper divisors (515406266).

690646474 is a wasteful number, since it uses less digits than its factorization.

690646474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542 (or 5535 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 690646474 is about 26280.1536144673. The cubic root of 690646474 is about 883.9314772886.

The spelling of 690646474 in words is "six hundred ninety million, six hundred forty-six thousand, four hundred seventy-four".