64748013 has 24 divisors (see below), whose sum is σ = 98478240. Its totient is φ = 37524960.

The previous prime is 64747997. The next prime is 64748017. The reversal of 64748013 is 31084746.

It is not a de Polignac number, because 64748013 - 2⁴ = 64747997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64748017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15603 + ... + 19311.

It is an arithmetic number, because the mean of its divisors is an integer number (4103260).

Almost surely, 2^64748013 is an apocalyptic number.

It is an amenable number.

64748013 is a deficient number, since it is larger than the sum of its proper divisors (33730227).

64748013 is a wasteful number, since it uses less digits than its factorization.

64748013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3746 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 64748013 is about 8046.6150025958. The cubic root of 64748013 is about 401.5523283156.

The spelling of 64748013 in words is "sixty-four million, seven hundred forty-eight thousand, thirteen".