297655680 has 128 divisors (see below), whose sum is σ = 1084366080. Its totient is φ = 68032512.

The previous prime is 297655667. The next prime is 297655723. The reversal of 297655680 is 86556792.

It is a happy number.

297655680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2367 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (8471610).

Almost surely, 2^297655680 is an apocalyptic number.

297655680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 297655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542183040).

297655680 is an abundant number, since it is smaller than the sum of its proper divisors (786710400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

297655680 is a wasteful number, since it uses less digits than its factorization.

297655680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22176 (or 22164 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 297655680 is about 17252.7006581578. The cubic root of 297655680 is about 667.6846492205.

The spelling of 297655680 in words is "two hundred ninety-seven million, six hundred fifty-five thousand, six hundred eighty".