377679661 has 4 divisors (see below), whose sum is σ = 379469824. Its totient is φ = 375889500.

The previous prime is 377679641. The next prime is 377679677. The reversal of 377679661 is 166976773.

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: 166976773 = 109 ⋅1531897.

It is a cyclic number.

It is not a de Polignac number, because 377679661 - 2⁵ = 377679629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 377679599 and 377679608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (377679641) 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, 894765 + ... + 895186.

It is an arithmetic number, because the mean of its divisors is an integer number (94867456).

Almost surely, 2^377679661 is an apocalyptic number.

It is an amenable number.

377679661 is a deficient number, since it is larger than the sum of its proper divisors (1790163).

377679661 is a wasteful number, since it uses less digits than its factorization.

377679661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790162.

The product of its digits is 2000376, while the sum is 52.

The square root of 377679661 is about 19433.9821189585. The cubic root of 377679661 is about 722.8383721726.

The spelling of 377679661 in words is "three hundred seventy-seven million, six hundred seventy-nine thousand, six hundred sixty-one".