297648646 has 32 divisors (see below), whose sum is σ = 469711008. Its totient is φ = 141315840.

The previous prime is 297648629. The next prime is 297648647. The reversal of 297648646 is 646846792.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 297648593 and 297648602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297648647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051621 + ... + 1051903.

It is an arithmetic number, because the mean of its divisors is an integer number (14678469).

Almost surely, 2^297648646 is an apocalyptic number.

297648646 is a deficient number, since it is larger than the sum of its proper divisors (172062362).

297648646 is a wasteful number, since it uses less digits than its factorization.

297648646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its digits is 3483648, while the sum is 52.

The square root of 297648646 is about 17252.4968048106. The cubic root of 297648646 is about 667.6793897534.

The spelling of 297648646 in words is "two hundred ninety-seven million, six hundred forty-eight thousand, six hundred forty-six".