7639754681 has 12 divisors (see below), whose sum is σ = 8632317888. Its totient is φ = 6745465584.

The previous prime is 7639754677. The next prime is 7639754687. The reversal of 7639754681 is 1864579367.

It is not a de Polignac number, because 7639754681 - 2² = 7639754677 is a prime.

It is a super-2 number, since 2×7639754681² (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 (7639754687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 978845 + ... + 986618.

It is an arithmetic number, because the mean of its divisors is an integer number (719359824).

Almost surely, 2^7639754681 is an apocalyptic number.

It is an amenable number.

7639754681 is a deficient number, since it is larger than the sum of its proper divisors (992563207).

7639754681 is a wasteful number, since it uses less digits than its factorization.

7639754681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965512 (or 1965499 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 56.

The square root of 7639754681 is about 87405.6902095052. The cubic root of 7639754681 is about 1969.5173202266.

The spelling of 7639754681 in words is "seven billion, six hundred thirty-nine million, seven hundred fifty-four thousand, six hundred eighty-one".