64663416 has 48 divisors (see below), whose sum is σ = 178013160. Its totient is φ = 21199680.

The previous prime is 64663411. The next prime is 64663481. The reversal of 64663416 is 61436646.

64663416 is a `hidden beast` number, since 6 + 4 + 6 + 634 + 16 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

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

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64663411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2970 + ... + 11753.

Almost surely, 2^64663416 is an apocalyptic number.

It is an amenable number.

64663416 is an abundant number, since it is smaller than the sum of its proper divisors (113349744).

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

64663416 is a wasteful number, since it uses less digits than its factorization.

64663416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796 (or 14789 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64663416 is about 8041.3566019671. The cubic root of 64663416 is about 401.3773683638.

The spelling of 64663416 in words is "sixty-four million, six hundred sixty-three thousand, four hundred sixteen".