64651156 has 6 divisors (see below), whose sum is σ = 113139530. Its totient is φ = 32325576.

The previous prime is 64651141. The next prime is 64651193. The reversal of 64651156 is 65115646.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 1988100 = 7916^2 + 1410^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 8081391 + ... + 8081398.

Almost surely, 2^64651156 is an apocalyptic number.

It is an amenable number.

64651156 is a deficient number, since it is larger than the sum of its proper divisors (48488374).

64651156 is a wasteful number, since it uses less digits than its factorization.

64651156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16162793 (or 16162791 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 64651156 is about 8040.5942566455. The cubic root of 64651156 is about 401.3520000908.

The spelling of 64651156 in words is "sixty-four million, six hundred fifty-one thousand, one hundred fifty-six".