645335495 has 32 divisors (see below), whose sum is σ = 929802240. Its totient is φ = 420393600.

The previous prime is 645335489. The next prime is 645335497. The reversal of 645335495 is 594533546.

It is not a de Polignac number, because 645335495 - 2²⁴ = 628558279 is a prime.

It is a super-2 number, since 2×645335495² = 832915802213790050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645335497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118901 + ... + 124209.

It is an arithmetic number, because the mean of its divisors is an integer number (29056320).

Almost surely, 2^645335495 is an apocalyptic number.

645335495 is a deficient number, since it is larger than the sum of its proper divisors (284466745).

645335495 is a wasteful number, since it uses less digits than its factorization.

645335495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495.

The product of its digits is 972000, while the sum is 44.

The square root of 645335495 is about 25403.4543910863. The cubic root of 645335495 is about 864.1620383494.

The spelling of 645335495 in words is "six hundred forty-five million, three hundred thirty-five thousand, four hundred ninety-five".