64163616 has 48 divisors (see below), whose sum is σ = 183744288. Its totient is φ = 19443200.

The previous prime is 64163597. The next prime is 64163633. The reversal of 64163616 is 61636146.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29325 + ... + 31436.

It is an arithmetic number, because the mean of its divisors is an integer number (3828006).

Almost surely, 2^64163616 is an apocalyptic number.

64163616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64163616 is an abundant number, since it is smaller than the sum of its proper divisors (119580672).

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

64163616 is a wasteful number, since it uses less digits than its factorization.

64163616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60785 (or 60777 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 64163616 is about 8010.2194726487. The cubic root of 64163616 is about 400.3405766033.

The spelling of 64163616 in words is "sixty-four million, one hundred sixty-three thousand, six hundred sixteen".