691452552 has 32 divisors (see below), whose sum is σ = 1975579200. Its totient is φ = 197557824.

The previous prime is 691452523. The next prime is 691452571. The reversal of 691452552 is 255254196.

It is a self number, because there is not a number n which added to its sum of digits gives 691452552.

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, 2057727 + ... + 2058062.

It is an arithmetic number, because the mean of its divisors is an integer number (61736850).

Almost surely, 2^691452552 is an apocalyptic number.

It is an amenable number.

691452552 is an abundant number, since it is smaller than the sum of its proper divisors (1284126648).

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

691452552 is a wasteful number, since it uses less digits than its factorization.

691452552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115805 (or 4115801 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 691452552 is about 26295.4853919832. The cubic root of 691452552 is about 884.2752328482.

The spelling of 691452552 in words is "six hundred ninety-one million, four hundred fifty-two thousand, five hundred fifty-two".