64652481 has 6 divisors (see below), whose sum is σ = 93386930. Its totient is φ = 43101648.

The previous prime is 64652477. The next prime is 64652557. The reversal of 64652481 is 18425646.

64652481 is a `hidden beast` number, since 646 + 5 + 2 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54154881 + 10497600 = 7359^2 + 3240^2 .

It is not a de Polignac number, because 64652481 - 2² = 64652477 is a prime.

It is a super-2 number, since 2×64652481² = 8359886598910722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64652681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3591796 + ... + 3591813.

Almost surely, 2^64652481 is an apocalyptic number.

It is an amenable number.

64652481 is a deficient number, since it is larger than the sum of its proper divisors (28734449).

64652481 is a wasteful number, since it uses less digits than its factorization.

64652481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7183615 (or 7183612 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 64652481 is about 8040.6766506308. The cubic root of 64652481 is about 401.3547419225.

The spelling of 64652481 in words is "sixty-four million, six hundred fifty-two thousand, four hundred eighty-one".