65647494676 has 12 divisors (see below), whose sum is σ = 114888592980. Its totient is φ = 32822182400.

The previous prime is 65647494667. The next prime is 65647494691. The reversal of 65647494676 is 67649474656.

It can be written as a sum of positive squares in 2 ways, for example, as 12650850576 + 52996644100 = 112476^2 + 230210^2 .

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, 294175 + ... + 466726.

It is an arithmetic number, because the mean of its divisors is an integer number (9574049415).

Almost surely, 2^65647494676 is an apocalyptic number.

It is an amenable number.

65647494676 is a deficient number, since it is larger than the sum of its proper divisors (49241098304).

65647494676 is a wasteful number, since it uses less digits than its factorization.

65647494676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782474 (or 782472 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 64.

The spelling of 65647494676 in words is "sixty-five billion, six hundred forty-seven million, four hundred ninety-four thousand, six hundred seventy-six".