646363265 has 8 divisors (see below), whose sum is σ = 778586688. Its totient is φ = 515123440.

The previous prime is 646363253. The next prime is 646363331. The reversal of 646363265 is 562363646.

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

It is not a de Polignac number, because 646363265 - 2⁸ = 646363009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244451 + ... + 247080.

It is an arithmetic number, because the mean of its divisors is an integer number (97323336).

Almost surely, 2^646363265 is an apocalyptic number.

It is an amenable number.

646363265 is a deficient number, since it is larger than the sum of its proper divisors (132223423).

646363265 is a wasteful number, since it uses less digits than its factorization.

646363265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491799.

The product of its digits is 466560, while the sum is 41.

The square root of 646363265 is about 25423.6752850566. The cubic root of 646363265 is about 864.6205537229.

The spelling of 646363265 in words is "six hundred forty-six million, three hundred sixty-three thousand, two hundred sixty-five".