64480276 has 18 divisors (see below), whose sum is σ = 131263818. Its totient is φ = 27634320.

The previous prime is 64480237. The next prime is 64480289. The reversal of 64480276 is 67208446.

It can be written as a sum of positive squares in only one way, i.e., 36917776 + 27562500 = 6076^2 + 5250^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164295 + ... + 164686.

Almost surely, 2^64480276 is an apocalyptic number.

It is an amenable number.

64480276 is an abundant number, since it is smaller than the sum of its proper divisors (66783542).

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

64480276 is a wasteful number, since it uses less digits than its factorization.

64480276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328999 (or 328990 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 64480276 is about 8029.9611456096. The cubic root of 64480276 is about 400.9980825069.

The spelling of 64480276 in words is "sixty-four million, four hundred eighty thousand, two hundred seventy-six".