64480277 has 6 divisors (see below), whose sum is σ = 65756502. Its totient is φ = 63206312.

The previous prime is 64480237. The next prime is 64480289. The reversal of 64480277 is 77208446.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 4866436 = 7721^2 + 2206^2 .

It is not a de Polignac number, because 64480277 - 2¹⁶ = 64414741 is a prime.

It is a super-2 number, since 2×64480277² = 8315412243993458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64480277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64480237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57908 + ... + 59010.

It is an arithmetic number, because the mean of its divisors is an integer number (10959417).

Almost surely, 2^64480277 is an apocalyptic number.

It is an amenable number.

64480277 is a deficient number, since it is larger than the sum of its proper divisors (1276225).

64480277 is an frugal number, since it uses more digits than its factorization.

64480277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 64480277 is about 8029.9612078764. The cubic root of 64480277 is about 400.9980845799.

The spelling of 64480277 in words is "sixty-four million, four hundred eighty thousand, two hundred seventy-seven".