7664900072 has 8 divisors (see below), whose sum is σ = 14371687650. Its totient is φ = 3832450032.

The previous prime is 7664900053. The next prime is 7664900093. The reversal of 7664900072 is 2700094667.

It can be written as a sum of positive squares in only one way, i.e., 7367475556 + 297424516 = 85834^2 + 17246^2 .

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

It is a super-2 number, since 2×7664900072² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479056247 + ... + 479056262.

Almost surely, 2^7664900072 is an apocalyptic number.

It is an amenable number.

7664900072 is a deficient number, since it is larger than the sum of its proper divisors (6706787578).

7664900072 is a wasteful number, since it uses less digits than its factorization.

7664900072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958112515 (or 958112511 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 7664900072 is about 87549.4150294564. The cubic root of 7664900072 is about 1971.6757685786.

The spelling of 7664900072 in words is "seven billion, six hundred sixty-four million, nine hundred thousand, seventy-two".