275601664 has 36 divisors (see below), whose sum is σ = 592451356. Its totient is φ = 127199232.

The previous prime is 275601661. The next prime is 275601701. The reversal of 275601664 is 466106572.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 116640000 + 158961664 = 10800^2 + 12608^2 .

It is not an unprimeable number, because it can be changed into a prime (275601661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38079 + ... + 44734.

Almost surely, 2^275601664 is an apocalyptic number.

It is an amenable number.

275601664 is an abundant number, since it is smaller than the sum of its proper divisors (316849692).

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

275601664 is an equidigital number, since it uses as much as digits as its factorization.

275601664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82842 (or 82828 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 275601664 is about 16601.2548923267. The cubic root of 275601664 is about 650.7696319480.

The spelling of 275601664 in words is "two hundred seventy-five million, six hundred one thousand, six hundred sixty-four".