7500945664 has 27 divisors (see below), whose sum is σ = 14975357313. Its totient is φ = 3749779968.

The previous prime is 7500945653. The next prime is 7500945677. The reversal of 7500945664 is 4665490057.

The square root of 7500945664 is 86608.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1632160000 + 5868785664 = 40400^2 + 76608^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1383022 + ... + 1388434.

Almost surely, 2^7500945664 is an apocalyptic number.

7500945664 is the 86608-th square number.

It is an amenable number.

7500945664 is a deficient number, since it is larger than the sum of its proper divisors (7474411649).

7500945664 is an frugal number, since it uses more digits than its factorization.

7500945664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The cubic root of 7500945664 is about 1957.5160871134.

The spelling of 7500945664 in words is "seven billion, five hundred million, nine hundred forty-five thousand, six hundred sixty-four".