64918308 has 144 divisors (see below), whose sum is σ = 199221120. Its totient is φ = 16054272.

The previous prime is 64918297. The next prime is 64918331. The reversal of 64918308 is 80381946.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241198 + ... + 241466.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^64918308 is an apocalyptic number.

64918308 is a gapful number since it is divisible by the number (68) 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 64918308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99610560).

64918308 is an abundant number, since it is smaller than the sum of its proper divisors (134302812).

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

64918308 is a wasteful number, since it uses less digits than its factorization.

64918308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 64918308 is about 8057.1898326898. The cubic root of 64918308 is about 401.9040636393.

The spelling of 64918308 in words is "sixty-four million, nine hundred eighteen thousand, three hundred eight".