880142661 has 6 divisors (see below), whose sum is σ = 1271317190. Its totient is φ = 586761768.

The previous prime is 880142617. The next prime is 880142701. The reversal of 880142661 is 166241088.

It can be written as a sum of positive squares in only one way, i.e., 712569636 + 167573025 = 26694^2 + 12945^2 .

It is not a de Polignac number, because 880142661 - 2⁶ = 880142597 is a prime.

It is a super-2 number, since 2×880142661² = 1549302207424321842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880149661) 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, 48896806 + ... + 48896823.

Almost surely, 2^880142661 is an apocalyptic number.

It is an amenable number.

880142661 is a deficient number, since it is larger than the sum of its proper divisors (391174529).

880142661 is a wasteful number, since it uses less digits than its factorization.

880142661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97793635 (or 97793632 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 880142661 is about 29667.1984016017. The cubic root of 880142661 is about 958.3357526106.

The spelling of 880142661 in words is "eight hundred eighty million, one hundred forty-two thousand, six hundred sixty-one".