7664489 has 16 divisors (see below), whose sum is σ = 9078912. Its totient is φ = 6334848.

The previous prime is 7664483. The next prime is 7664507. The reversal of 7664489 is 9844667.

It is a cyclic number.

It is not a de Polignac number, because 7664489 - 2²⁰ = 6615913 is a prime.

It is a super-2 number, since 2×7664489² = 117488783262242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7664483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26942 + ... + 27224.

It is an arithmetic number, because the mean of its divisors is an integer number (567432).

Almost surely, 2^7664489 is an apocalyptic number.

It is an amenable number.

7664489 is a deficient number, since it is larger than the sum of its proper divisors (1414423).

7664489 is a wasteful number, since it uses less digits than its factorization.

7664489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its digits is 290304, while the sum is 44.

The square root of 7664489 is about 2768.4813526553. The cubic root of 7664489 is about 197.1640520666.

The spelling of 7664489 in words is "seven million, six hundred sixty-four thousand, four hundred eighty-nine".