297664 has 14 divisors (see below), whose sum is σ = 590804. Its totient is φ = 148800.

The previous prime is 297659. The next prime is 297683. The reversal of 297664 is 466792.

297664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁵ + 9 + 6⁴ + 7 + 6⁷ + 4⁷ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2262 + ... + 2389.

2²⁹⁷⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

297664 is a deficient number, since it is larger than the sum of its proper divisors (293140).

297664 is an equidigital number, since it uses as much as digits as its factorization.

297664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4653 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 297664 is about 545.5859235721. The cubic root of 297664 is about 66.7690870149.

It can be divided in two parts, 297 and 664, that added together give a square (961 = 31²).

The spelling of 297664 in words is "two hundred ninety-seven thousand, six hundred sixty-four".