376988561 has 4 divisors (see below), whose sum is σ = 393379392. Its totient is φ = 360597732.

The previous prime is 376988543. The next prime is 376988567. The reversal of 376988561 is 165889673.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165889673 = 7523 ⋅22051.

It is a cyclic number.

It is not a de Polignac number, because 376988561 - 2¹⁴ = 376972177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (376988567) 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, 8195381 + ... + 8195426.

It is an arithmetic number, because the mean of its divisors is an integer number (98344848).

Almost surely, 2^376988561 is an apocalyptic number.

It is an amenable number.

376988561 is a deficient number, since it is larger than the sum of its proper divisors (16390831).

376988561 is a wasteful number, since it uses less digits than its factorization.

376988561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16390830.

The product of its digits is 2177280, while the sum is 53.

The square root of 376988561 is about 19416.1932674765. The cubic root of 376988561 is about 722.3972058750.

The spelling of 376988561 in words is "three hundred seventy-six million, nine hundred eighty-eight thousand, five hundred sixty-one".