880776261 has 20 divisors (see below), whose sum is σ = 1316558892. Its totient is φ = 586813248.

The previous prime is 880776251. The next prime is 880776263. The reversal of 880776261 is 162677088.

It can be written as a sum of positive squares in 2 ways, for example, as 543356100 + 337420161 = 23310^2 + 18369^2 .

It is not a de Polignac number, because 880776261 - 2²⁵ = 847221829 is a prime.

It is a super-2 number, since 2×880776261² = 1551533643882280242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880776263) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198115 + ... + 202511.

Almost surely, 2^880776261 is an apocalyptic number.

880776261 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

880776261 is a deficient number, since it is larger than the sum of its proper divisors (435782631).

880776261 is a wasteful number, since it uses less digits than its factorization.

880776261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882 (or 6873 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 880776261 is about 29677.8749407703. The cubic root of 880776261 is about 958.5656607506.

The spelling of 880776261 in words is "eight hundred eighty million, seven hundred seventy-six thousand, two hundred sixty-one".