647386686962 has 4 divisors (see below), whose sum is σ = 971080030446. Its totient is φ = 323693343480.

The previous prime is 647386686959. The next prime is 647386686979. The reversal of 647386686962 is 269686683746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 591131860201 + 56254826761 = 768851^2 + 237181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161846671739 + ... + 161846671742.

Almost surely, 2^647386686962 is an apocalyptic number.

647386686962 is a deficient number, since it is larger than the sum of its proper divisors (323693343484).

647386686962 is a wasteful number, since it uses less digits than its factorization.

647386686962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323693343483.

The product of its digits is 752467968, while the sum is 71.

The spelling of 647386686962 in words is "six hundred forty-seven billion, three hundred eighty-six million, six hundred eighty-six thousand, nine hundred sixty-two".