64627672646 has 8 divisors (see below), whose sum is σ = 96942814200. Its totient is φ = 32313401248.

The previous prime is 64627672621. The next prime is 64627672661.

64627672646 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64627672591 and 64627672600.

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, 20030 + ... + 360078.

It is an arithmetic number, because the mean of its divisors is an integer number (12117851775).

Almost surely, 2^64627672646 is an apocalyptic number.

64627672646 is a deficient number, since it is larger than the sum of its proper divisors (32315141554).

64627672646 is a wasteful number, since it uses less digits than its factorization.

64627672646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435078.

The product of its digits is 24385536, while the sum is 56.

The spelling of 64627672646 in words is "sixty-four billion, six hundred twenty-seven million, six hundred seventy-two thousand, six hundred forty-six".