64384936 has 64 divisors (see below), whose sum is σ = 151879680. Its totient is φ = 24857280.

The previous prime is 64384913. The next prime is 64384949. The reversal of 64384936 is 63948346.

It is a junction number, because it is equal to n+sod(n) for n = 64384892 and 64384901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77821 + ... + 78643.

It is an arithmetic number, because the mean of its divisors is an integer number (2373120).

Almost surely, 2^64384936 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 64384936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75939840).

64384936 is an abundant number, since it is smaller than the sum of its proper divisors (87494744).

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

64384936 is a wasteful number, since it uses less digits than its factorization.

64384936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 970 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 64384936 is about 8024.0224326705. The cubic root of 64384936 is about 400.8003475415.

The spelling of 64384936 in words is "sixty-four million, three hundred eighty-four thousand, nine hundred thirty-six".