65674847656 has 24 divisors (see below), whose sum is σ = 135352606410. Its totient is φ = 29852203040.

The previous prime is 65674847621. The next prime is 65674847713.

65674847656 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 45868788900 + 19806058756 = 214170^2 + 140734^2 .

It is a super-2 number, since 2×65674847656² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33921991 + ... + 33923926.

Almost surely, 2^65674847656 is an apocalyptic number.

It is an amenable number.

65674847656 is an abundant number, since it is smaller than the sum of its proper divisors (69677758754).

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

65674847656 is a wasteful number, since it uses less digits than its factorization.

65674847656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67845945 (or 67845930 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 64.

The spelling of 65674847656 in words is "sixty-five billion, six hundred seventy-four million, eight hundred forty-seven thousand, six hundred fifty-six".