377623681 has 4 divisors (see below), whose sum is σ = 378393264. Its totient is φ = 376854100.

The previous prime is 377623657. The next prime is 377623691. The reversal of 377623681 is 186326773.

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: 186326773 = 1129 ⋅165037.

It is a cyclic number.

It is not a de Polignac number, because 377623681 - 2²³ = 369235073 is a prime.

It is a super-2 number, since 2×377623681² = 285199288903979522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (377623691) 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, 384055 + ... + 385036.

It is an arithmetic number, because the mean of its divisors is an integer number (94598316).

Almost surely, 2^377623681 is an apocalyptic number.

It is an amenable number.

377623681 is a deficient number, since it is larger than the sum of its proper divisors (769583).

377623681 is an equidigital number, since it uses as much as digits as its factorization.

377623681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769582.

The product of its digits is 254016, while the sum is 43.

The square root of 377623681 is about 19432.5418049209. The cubic root of 377623681 is about 722.8026571689.

The spelling of 377623681 in words is "three hundred seventy-seven million, six hundred twenty-three thousand, six hundred eighty-one".