7796479621 has 6 divisors (see below), whose sum is σ = 9069374310. Its totient is φ = 6682696776.

The previous prime is 7796479619. The next prime is 7796479637. The reversal of 7796479621 is 1269746977.

It can be written as a sum of positive squares in only one way, i.e., 7766896900 + 29582721 = 88130^2 + 5439^2 .

It is not a de Polignac number, because 7796479621 - 2¹ = 7796479619 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 (7796479651) 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, 79555866 + ... + 79555963.

It is an arithmetic number, because the mean of its divisors is an integer number (1511562385).

Almost surely, 2^7796479621 is an apocalyptic number.

It is an amenable number.

7796479621 is a deficient number, since it is larger than the sum of its proper divisors (1272894689).

7796479621 is a wasteful number, since it uses less digits than its factorization.

7796479621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159111843 (or 159111836 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 58.

The square root of 7796479621 is about 88297.6761925250. The cubic root of 7796479621 is about 1982.8940792719.

The spelling of 7796479621 in words is "seven billion, seven hundred ninety-six million, four hundred seventy-nine thousand, six hundred twenty-one".