64550808 has 96 divisors (see below), whose sum is σ = 201077760. Its totient is φ = 18325440.

The previous prime is 64550807. The next prime is 64550813. The reversal of 64550808 is 80805546.

It is a happy number.

64550808 is a `hidden beast` number, since 645 + 5 + 0 + 8 + 0 + 8 = 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (64550807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106041 + ... + 106647.

It is an arithmetic number, because the mean of its divisors is an integer number (2094560).

Almost surely, 2^64550808 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 64550808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100538880).

64550808 is an abundant number, since it is smaller than the sum of its proper divisors (136526952).

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

64550808 is a wasteful number, since it uses less digits than its factorization.

64550808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 64550808 is about 8034.3517473409. The cubic root of 64550808 is about 401.1442403307.

The spelling of 64550808 in words is "sixty-four million, five hundred fifty thousand, eight hundred eight".