64479712 has 48 divisors (see below), whose sum is σ = 140216832. Its totient is φ = 28942720.

The previous prime is 64479707. The next prime is 64479719. The reversal of 64479712 is 21797446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64479719) 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, 28113 + ... + 30319.

It is an arithmetic number, because the mean of its divisors is an integer number (2921184).

Almost surely, 2^64479712 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 64479712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70108416).

64479712 is an abundant number, since it is smaller than the sum of its proper divisors (75737120).

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

64479712 is a wasteful number, since it uses less digits than its factorization.

64479712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2303 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 64479712 is about 8029.9260270565. The cubic root of 64479712 is about 400.9969133454.

It can be divided in two parts, 644797 and 12, that added together give a square (644809 = 803²).

The spelling of 64479712 in words is "sixty-four million, four hundred seventy-nine thousand, seven hundred twelve".