7752885664 has 24 divisors (see below), whose sum is σ = 15351732900. Its totient is φ = 3854032896.

The previous prime is 7752885659. The next prime is 7752885667. The reversal of 7752885664 is 4665882577.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6905610000 + 847275664 = 83100^2 + 29108^2 .

It is a super-2 number, since 2×7752885664² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7752885599 and 7752885608.

It is not an unprimeable number, because it can be changed into a prime (7752885667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694689 + ... + 705760.

Almost surely, 2^7752885664 is an apocalyptic number.

It is an amenable number.

7752885664 is a deficient number, since it is larger than the sum of its proper divisors (7598847236).

7752885664 is a wasteful number, since it uses less digits than its factorization.

7752885664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400632 (or 1400624 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 58.

The square root of 7752885664 is about 88050.4722531345. The cubic root of 7752885664 is about 1979.1913903907.

The spelling of 7752885664 in words is "seven billion, seven hundred fifty-two million, eight hundred eighty-five thousand, six hundred sixty-four".