7617779379 has 40 divisors (see below), whose sum is σ = 13013710688. Its totient is φ = 4350205440.

The previous prime is 7617779359. The next prime is 7617779381. The reversal of 7617779379 is 9739777167.

7617779379 is a `hidden beast` number, since 7 + 617 + 7 + 7 + 9 + 3 + 7 + 9 = 666.

It is not a de Polignac number, because 7617779379 - 2⁹ = 7617778867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7617779329) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1140309 + ... + 1146969.

Almost surely, 2^7617779379 is an apocalyptic number.

7617779379 is a deficient number, since it is larger than the sum of its proper divisors (5395931309).

7617779379 is a wasteful number, since it uses less digits than its factorization.

7617779379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697 (or 8688 counting only the distinct ones).

The product of its digits is 24504606, while the sum is 63.

The square root of 7617779379 is about 87279.8910345333. The cubic root of 7617779379 is about 1967.6271067177.

The spelling of 7617779379 in words is "seven billion, six hundred seventeen million, seven hundred seventy-nine thousand, three hundred seventy-nine".