64670748 has 24 divisors (see below), whose sum is σ = 151226880. Its totient is φ = 21510000.

The previous prime is 64670741. The next prime is 64670761. The reversal of 64670748 is 84707646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64670741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (6301120).

Almost surely, 2^64670748 is an apocalyptic number.

It is an amenable number.

64670748 is an abundant number, since it is smaller than the sum of its proper divisors (86556132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64670748 is a wasteful number, since it uses less digits than its factorization.

64670748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11737 (or 11735 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 64670748 is about 8041.8124822704. The cubic root of 64670748 is about 401.3925381348.

The spelling of 64670748 in words is "sixty-four million, six hundred seventy thousand, seven hundred forty-eight".