7275621736 has 16 divisors (see below), whose sum is σ = 13741367940. Its totient is φ = 3611256960.

The previous prime is 7275621713. The next prime is 7275621739. The reversal of 7275621736 is 6371265727.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7158852100 + 116769636 = 84610^2 + 10806^2 .

It is not an unprimeable number, because it can be changed into a prime (7275621739) 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, 3318075 + ... + 3320266.

Almost surely, 2^7275621736 is an apocalyptic number.

It is an amenable number.

7275621736 is a deficient number, since it is larger than the sum of its proper divisors (6465746204).

7275621736 is a wasteful number, since it uses less digits than its factorization.

7275621736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638484 (or 6638480 counting only the distinct ones).

The product of its digits is 740880, while the sum is 46.

The square root of 7275621736 is about 85297.2551492719. The cubic root of 7275621736 is about 1937.7156070904.

The spelling of 7275621736 in words is "seven billion, two hundred seventy-five million, six hundred twenty-one thousand, seven hundred thirty-six".