64435712 has 80 divisors (see below), whose sum is σ = 148932432. Its totient is φ = 27525120.

The previous prime is 64435711. The next prime is 64435727. The reversal of 64435712 is 21753446.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64435711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95408 + ... + 96080.

Almost surely, 2^64435712 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 64435712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74466216).

64435712 is an abundant number, since it is smaller than the sum of its proper divisors (84496720).

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

64435712 is a wasteful number, since it uses less digits than its factorization.

64435712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 703 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 64435712 is about 8027.1858082394. The cubic root of 64435712 is about 400.9056811398.

The spelling of 64435712 in words is "sixty-four million, four hundred thirty-five thousand, seven hundred twelve".