64903392 has 144 divisors (see below), whose sum is σ = 201474000. Its totient is φ = 19740672.

The previous prime is 64903361. The next prime is 64903393. The reversal of 64903392 is 29330946.

It is a happy number.

64903392 is a `hidden beast` number, since 649 + 0 + 3 + 3 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 (64903393) 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, 158484 + ... + 158892.

It is an arithmetic number, because the mean of its divisors is an integer number (1399125).

Almost surely, 2^64903392 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 64903392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100737000).

64903392 is an abundant number, since it is smaller than the sum of its proper divisors (136570608).

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

64903392 is a wasteful number, since it uses less digits than its factorization.

64903392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 64903392 is about 8056.2641466129. The cubic root of 64903392 is about 401.8732800264.

The spelling of 64903392 in words is "sixty-four million, nine hundred three thousand, three hundred ninety-two".