7077560661 has 6 divisors (see below), whose sum is σ = 10223143190. Its totient is φ = 4718373768.

The previous prime is 7077560653. The next prime is 7077560669. The reversal of 7077560661 is 1660657707.

It is an interprime number because it is at equal distance from previous prime (7077560653) and next prime (7077560669).

It can be written as a sum of positive squares in only one way, i.e., 4596026436 + 2481534225 = 67794^2 + 49815^2 .

It is not a de Polignac number, because 7077560661 - 2³ = 7077560653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7077560669) 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, 393197806 + ... + 393197823.

Almost surely, 2^7077560661 is an apocalyptic number.

It is an amenable number.

7077560661 is a deficient number, since it is larger than the sum of its proper divisors (3145582529).

7077560661 is a wasteful number, since it uses less digits than its factorization.

7077560661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786395635 (or 786395632 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 7077560661 is about 84128.2393789386. The cubic root of 7077560661 is about 1919.9704007481.

The spelling of 7077560661 in words is "seven billion, seventy-seven million, five hundred sixty thousand, six hundred sixty-one".