2623377681 has 6 divisors (see below), whose sum is σ = 3789323330. Its totient is φ = 1748918448.

The previous prime is 2623377667. The next prime is 2623377703. The reversal of 2623377681 is 1867733262.

It can be written as a sum of positive squares in only one way, i.e., 2005606656 + 617771025 = 44784^2 + 24855^2 .

It is not a de Polignac number, because 2623377681 - 2⁷ = 2623377553 is a prime.

It is a super-2 number, since 2×2623377681² = 13764220914337875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2623377611) 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, 145743196 + ... + 145743213.

Almost surely, 2^2623377681 is an apocalyptic number.

It is an amenable number.

2623377681 is a deficient number, since it is larger than the sum of its proper divisors (1165945649).

2623377681 is a wasteful number, since it uses less digits than its factorization.

2623377681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291486415 (or 291486412 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 2623377681 is about 51218.9191705565. The cubic root of 2623377681 is about 1379.1778483497.

The spelling of 2623377681 in words is "two billion, six hundred twenty-three million, three hundred seventy-seven thousand, six hundred eighty-one".