275638464 has 70 divisors (see below), whose sum is σ = 817094124. Its totient is φ = 91877760.

The previous prime is 275638423. The next prime is 275638477. The reversal of 275638464 is 464836572.

275638464 is a `hidden beast` number, since 2 + 7 + 5 + 638 + 4 + 6 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21402 + ... + 31769.

Almost surely, 2^275638464 is an apocalyptic number.

275638464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

275638464 is an abundant number, since it is smaller than the sum of its proper divisors (541455660).

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

275638464 is an equidigital number, since it uses as much as digits as its factorization.

275638464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53195 (or 53176 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 275638464 is about 16602.3632052789. The cubic root of 275638464 is about 650.7985955572.

The spelling of 275638464 in words is "two hundred seventy-five million, six hundred thirty-eight thousand, four hundred sixty-four".