691446166252 has 12 divisors (see below), whose sum is σ = 1210041969136. Its totient is φ = 345719889360.

The previous prime is 691446166241. The next prime is 691446166261. The reversal of 691446166252 is 252661644196.

It is a hoax number, since the sum of its digits (52) 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 691446166252.

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, 272883 + ... + 1207210.

Almost surely, 2^691446166252 is an apocalyptic number.

It is an amenable number.

691446166252 is a deficient number, since it is larger than the sum of its proper divisors (518595802884).

691446166252 is a wasteful number, since it uses less digits than its factorization.

691446166252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596888 (or 1596886 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The spelling of 691446166252 in words is "six hundred ninety-one billion, four hundred forty-six million, one hundred sixty-six thousand, two hundred fifty-two".