64606464 has 144 divisors (see below), whose sum is σ = 206035200. Its totient is φ = 19851264.

The previous prime is 64606439. The next prime is 64606481. The reversal of 64606464 is 46460646.

It is a happy number.

64606464 is a `hidden beast` number, since 6 + 4 + 6 + 0 + 646 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89497 + ... + 90215.

It is an arithmetic number, because the mean of its divisors is an integer number (1430800).

Almost surely, 2^64606464 is an apocalyptic number.

64606464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64606464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103017600).

64606464 is an abundant number, since it is smaller than the sum of its proper divisors (141428736).

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

64606464 is a wasteful number, since it uses less digits than its factorization.

64606464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 64606464 is about 8037.8146283676. The cubic root of 64606464 is about 401.2594966745.

The spelling of 64606464 in words is "sixty-four million, six hundred six thousand, four hundred sixty-four".