275880564 has 18 divisors (see below), whose sum is σ = 697364850. Its totient is φ = 91960176.

The previous prime is 275880559. The next prime is 275880571. The reversal of 275880564 is 465088572.

275880564 is a `hidden beast` number, since 2 + 7 + 5 + 8 + 80 + 564 = 666.

It can be written as a sum of positive squares in only one way, i.e., 146603664 + 129276900 = 12108^2 + 11370^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×275880564² = 152220171185916192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3831639 + ... + 3831710.

Almost surely, 2^275880564 is an apocalyptic number.

It is an amenable number.

275880564 is an abundant number, since it is smaller than the sum of its proper divisors (421484286).

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

275880564 is a wasteful number, since it uses less digits than its factorization.

275880564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663359 (or 7663354 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 275880564 is about 16609.6527356835. The cubic root of 275880564 is about 650.9890772375.

The spelling of 275880564 in words is "two hundred seventy-five million, eight hundred eighty thousand, five hundred sixty-four".