690461652 has 24 divisors (see below), whose sum is σ = 1633770432. Its totient is φ = 226912000.

The previous prime is 690461627. The next prime is 690461663. The reversal of 690461652 is 256164096.

It is a self number, because there is not a number n which added to its sum of digits gives 690461652.

It is a congruent 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, 404349 + ... + 406052.

It is an arithmetic number, because the mean of its divisors is an integer number (68073768).

Almost surely, 2^690461652 is an apocalyptic number.

It is an amenable number.

690461652 is an abundant number, since it is smaller than the sum of its proper divisors (943308780).

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

690461652 is a wasteful number, since it uses less digits than its factorization.

690461652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810479 (or 810477 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 690461652 is about 26276.6369994335. The cubic root of 690461652 is about 883.8526214317.

The spelling of 690461652 in words is "six hundred ninety million, four hundred sixty-one thousand, six hundred fifty-two".