7664609 has 8 divisors (see below), whose sum is σ = 7784832. Its totient is φ = 7545600.

The previous prime is 7664597. The next prime is 7664611. The reversal of 7664609 is 9064667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7664609 - 2²⁰ = 6616033 is a prime.

It is a super-2 number, since 2×7664609² = 117492462245762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29012 + ... + 29274.

It is an arithmetic number, because the mean of its divisors is an integer number (973104).

Almost surely, 2^7664609 is an apocalyptic number.

It is an amenable number.

7664609 is a deficient number, since it is larger than the sum of its proper divisors (120223).

7664609 is a wasteful number, since it uses less digits than its factorization.

7664609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 7664609 is about 2768.5030251022. The cubic root of 7664609 is about 197.1650810355.

The spelling of 7664609 in words is "seven million, six hundred sixty-four thousand, six hundred nine".