64620448 has 24 divisors (see below), whose sum is σ = 127401120. Its totient is φ = 32264640.

The previous prime is 64620433. The next prime is 64620511. The reversal of 64620448 is 84402646.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41443 + ... + 42973.

It is an arithmetic number, because the mean of its divisors is an integer number (5308380).

Almost surely, 2^64620448 is an apocalyptic number.

It is an amenable number.

64620448 is a deficient number, since it is larger than the sum of its proper divisors (62780672).

64620448 is a wasteful number, since it uses less digits than its factorization.

64620448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 64620448 is about 8038.6844694888. The cubic root of 64620448 is about 401.2884453156.

The spelling of 64620448 in words is "sixty-four million, six hundred twenty thousand, four hundred forty-eight".