645310295 has 16 divisors (see below), whose sum is σ = 888452928. Its totient is φ = 440770560.

The previous prime is 645310279. The next prime is 645310301. The reversal of 645310295 is 592013546.

It is not a de Polignac number, because 645310295 - 2⁴ = 645310279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 15 ways as a sum of consecutive naturals, for example, 26876 + ... + 44865.

It is an arithmetic number, because the mean of its divisors is an integer number (55528308).

Almost surely, 2^645310295 is an apocalyptic number.

645310295 is a deficient number, since it is larger than the sum of its proper divisors (243142633).

645310295 is a wasteful number, since it uses less digits than its factorization.

645310295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72010.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 645310295 is about 25402.9583907072. The cubic root of 645310295 is about 864.1507898505.

The spelling of 645310295 in words is "six hundred forty-five million, three hundred ten thousand, two hundred ninety-five".