64621116 has 72 divisors (see below), whose sum is σ = 187474560. Its totient is φ = 18385056.

The previous prime is 64621103. The next prime is 64621127. The reversal of 64621116 is 61112646.

64621116 is a `hidden beast` number, since 646 + 2 + 1 + 1 + 16 = 666.

64621116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64621116.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87075 + ... + 87813.

Almost surely, 2^64621116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64621116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93737280).

64621116 is an abundant number, since it is smaller than the sum of its proper divisors (122853444).

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

64621116 is a wasteful number, since it uses less digits than its factorization.

64621116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1098 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 64621116 is about 8038.7260184683. The cubic root of 64621116 is about 401.2898280552.

The spelling of 64621116 in words is "sixty-four million, six hundred twenty-one thousand, one hundred sixteen".