7639507646 has 4 divisors (see below), whose sum is σ = 11459261472. Its totient is φ = 3819753822.

The previous prime is 7639507639. The next prime is 7639507649. The reversal of 7639507646 is 6467059367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6467059367 = 149 ⋅43403083.

It is a super-2 number, since 2×7639507646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7639507649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909876910 + ... + 1909876913.

It is an arithmetic number, because the mean of its divisors is an integer number (2864815368).

Almost surely, 2^7639507646 is an apocalyptic number.

7639507646 is a deficient number, since it is larger than the sum of its proper divisors (3819753826).

7639507646 is a wasteful number, since it uses less digits than its factorization.

7639507646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819753825.

The product of its (nonzero) digits is 5715360, while the sum is 53.

The square root of 7639507646 is about 87404.2770463780. The cubic root of 7639507646 is about 1969.4960915800.

The spelling of 7639507646 in words is "seven billion, six hundred thirty-nine million, five hundred seven thousand, six hundred forty-six".