646336495 has 8 divisors (see below), whose sum is σ = 886404384. Its totient is φ = 443202144.

The previous prime is 646336463. The next prime is 646336529. The reversal of 646336495 is 594633646.

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

It is not a de Polignac number, because 646336495 - 2⁵ = 646336463 is a prime.

It is a Duffinian number.

It is a congruent 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, 9233344 + ... + 9233413.

It is an arithmetic number, because the mean of its divisors is an integer number (110800548).

Almost surely, 2^646336495 is an apocalyptic number.

646336495 is a deficient number, since it is larger than the sum of its proper divisors (240067889).

646336495 is a wasteful number, since it uses less digits than its factorization.

646336495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18466769.

The product of its digits is 1399680, while the sum is 46.

The square root of 646336495 is about 25423.1488018302. The cubic root of 646336495 is about 864.6086170855.

The spelling of 646336495 in words is "six hundred forty-six million, three hundred thirty-six thousand, four hundred ninety-five".