646383297 has 16 divisors (see below), whose sum is σ = 985347072. Its totient is φ = 369218640.

The previous prime is 646383277. The next prime is 646383301. The reversal of 646383297 is 792383646.

It is not a de Polignac number, because 646383297 - 2⁷ = 646383169 is a prime.

It is a super-2 number, since 2×646383297² = 835622733281180418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (646383277) 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, 75022 + ... + 83192.

It is an arithmetic number, because the mean of its divisors is an integer number (61584192).

Almost surely, 2^646383297 is an apocalyptic number.

It is an amenable number.

646383297 is a deficient number, since it is larger than the sum of its proper divisors (338963775).

646383297 is a wasteful number, since it uses less digits than its factorization.

646383297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948.

The product of its digits is 1306368, while the sum is 48.

The square root of 646383297 is about 25424.0692455004. The cubic root of 646383297 is about 864.6294856971.

The spelling of 646383297 in words is "six hundred forty-six million, three hundred eighty-three thousand, two hundred ninety-seven".