7264664289 has 9 divisors (see below), whose sum is σ = 10493773329. Its totient is φ = 4842939060.

The previous prime is 7264664257. The next prime is 7264664291. The reversal of 7264664289 is 9824664627.

The square root of 7264664289 is 85233.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 7264664289 - 2⁵ = 7264664257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7264664219) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 241494 + ... + 269904.

Almost surely, 2^7264664289 is an apocalyptic number.

7264664289 is the 85233-rd square number.

7264664289 is the 42617-th centered octagonal number.

It is an amenable number.

7264664289 is a deficient number, since it is larger than the sum of its proper divisors (3229109040).

7264664289 is an frugal number, since it uses more digits than its factorization.

7264664289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56828 (or 28414 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The cubic root of 7264664289 is about 1936.7423530837.

The spelling of 7264664289 in words is "seven billion, two hundred sixty-four million, six hundred sixty-four thousand, two hundred eighty-nine".