691733652 has 12 divisors (see below), whose sum is σ = 1614045216. Its totient is φ = 230577880.

The previous prime is 691733633. The next prime is 691733677. The reversal of 691733652 is 256337196.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28822224 + ... + 28822247.

It is an arithmetic number, because the mean of its divisors is an integer number (134503768).

Almost surely, 2^691733652 is an apocalyptic number.

It is an amenable number.

691733652 is an abundant number, since it is smaller than the sum of its proper divisors (922311564).

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

691733652 is a wasteful number, since it uses less digits than its factorization.

691733652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57644478 (or 57644476 counting only the distinct ones).

The product of its digits is 204120, while the sum is 42.

The square root of 691733652 is about 26300.8298728386. The cubic root of 691733652 is about 884.3950463677.

The spelling of 691733652 in words is "six hundred ninety-one million, seven hundred thirty-three thousand, six hundred fifty-two".