7691250664 has 8 divisors (see below), whose sum is σ = 14421095010. Its totient is φ = 3845625328.

The previous prime is 7691250659. The next prime is 7691250667. The reversal of 7691250664 is 4660521967.

It can be written as a sum of positive squares in only one way, i.e., 4606336900 + 3084913764 = 67870^2 + 55542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (7691250667) 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, 480703159 + ... + 480703174.

Almost surely, 2^7691250664 is an apocalyptic number.

It is an amenable number.

7691250664 is a deficient number, since it is larger than the sum of its proper divisors (6729844346).

7691250664 is a wasteful number, since it uses less digits than its factorization.

7691250664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961406339 (or 961406335 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 7691250664 is about 87699.7757351751. The cubic root of 7691250664 is about 1973.9326103501.

The spelling of 7691250664 in words is "seven billion, six hundred ninety-one million, two hundred fifty thousand, six hundred sixty-four".