64945608 has 128 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 16922880.

The previous prime is 64945603. The next prime is 64945631. The reversal of 64945608 is 80654946.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 64945608.

It is not an unprimeable number, because it can be changed into a prime (64945603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285991 + ... + 286217.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^64945608 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 64945608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101122560).

64945608 is an abundant number, since it is smaller than the sum of its proper divisors (137299512).

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

64945608 is a wasteful number, since it uses less digits than its factorization.

64945608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64945608 is about 8058.8837936776. The cubic root of 64945608 is about 401.9603931178.

It can be divided in two parts, 649 and 45608, that multiplied together give a palindrome (29599592).

The spelling of 64945608 in words is "sixty-four million, nine hundred forty-five thousand, six hundred eight".