64951328 has 48 divisors (see below), whose sum is σ = 140950656. Its totient is φ = 29272320.

The previous prime is 64951309. The next prime is 64951349. The reversal of 64951328 is 82315946.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64951291 and 64951300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16073 + ... + 19703.

It is an arithmetic number, because the mean of its divisors is an integer number (2936472).

Almost surely, 2^64951328 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 64951328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70475328).

64951328 is an abundant number, since it is smaller than the sum of its proper divisors (75999328).

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

64951328 is a wasteful number, since it uses less digits than its factorization.

64951328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697 (or 3689 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 64951328 is about 8059.2386737210. The cubic root of 64951328 is about 401.9721934844.

The spelling of 64951328 in words is "sixty-four million, nine hundred fifty-one thousand, three hundred twenty-eight".