64628276 has 6 divisors (see below), whose sum is σ = 113099490. Its totient is φ = 32314136.

The previous prime is 64628231. The next prime is 64628293. The reversal of 64628276 is 67282646.

64628276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 211600 = 8026^2 + 460^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078531 + ... + 8078538.

It is an arithmetic number, because the mean of its divisors is an integer number (18849915).

Almost surely, 2^64628276 is an apocalyptic number.

It is an amenable number.

64628276 is a deficient number, since it is larger than the sum of its proper divisors (48471214).

64628276 is a wasteful number, since it uses less digits than its factorization.

64628276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16157073 (or 16157071 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 64628276 is about 8039.1713503321. The cubic root of 64628276 is about 401.3046484381.

The spelling of 64628276 in words is "sixty-four million, six hundred twenty-eight thousand, two hundred seventy-six".