7636970721 has 8 divisors (see below), whose sum is σ = 10187744800. Its totient is φ = 5088755232.

The previous prime is 7636970687. The next prime is 7636970767. The reversal of 7636970721 is 1270796367.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7636970721 - 2¹⁵ = 7636937953 is a prime.

It is a super-2 number, since 2×7636970721² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7636970771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632671 + ... + 644628.

It is an arithmetic number, because the mean of its divisors is an integer number (1273468100).

Almost surely, 2^7636970721 is an apocalyptic number.

It is an amenable number.

7636970721 is a deficient number, since it is larger than the sum of its proper divisors (2550774079).

7636970721 is a wasteful number, since it uses less digits than its factorization.

7636970721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279295.

The product of its (nonzero) digits is 666792, while the sum is 48.

The square root of 7636970721 is about 87389.7632506234. The cubic root of 7636970721 is about 1969.2780575880.

The spelling of 7636970721 in words is "seven billion, six hundred thirty-six million, nine hundred seventy thousand, seven hundred twenty-one".