7656289 has 3 divisors (see below), whose sum is σ = 7659057. Its totient is φ = 7653522.

The previous prime is 7656281. The next prime is 7656301. The reversal of 7656289 is 9826567.

The square root of 7656289 is 2767.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 7656289 - 2³ = 7656281 is a prime.

It is a super-2 number, since 2×7656289² = 117237522503042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7656281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1384 + ... + 4150.

It is an arithmetic number, because the mean of its divisors is an integer number (2553019).

Almost surely, 2^7656289 is an apocalyptic number.

7656289 is the 2767-th square number.

7656289 is the 1384-th centered octagonal number.

It is an amenable number.

7656289 is a deficient number, since it is larger than the sum of its proper divisors (2768).

7656289 is an frugal number, since it uses more digits than its factorization.

7656289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534 (or 2767 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The cubic root of 7656289 is about 197.0937137336.

It can be divided in two parts, 76 and 56289, that added together give a palindrome (56365).

The spelling of 7656289 in words is "seven million, six hundred fifty-six thousand, two hundred eighty-nine".