645802514 has 32 divisors (see below), whose sum is σ = 1196872320. Its totient is φ = 255115008.

The previous prime is 645802501. The next prime is 645802517. The reversal of 645802514 is 415208546.

It is not an unprimeable number, because it can be changed into a prime (645802517) 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, 22967 + ... + 42650.

It is an arithmetic number, because the mean of its divisors is an integer number (37402260).

Almost surely, 2^645802514 is an apocalyptic number.

645802514 is a deficient number, since it is larger than the sum of its proper divisors (551069806).

645802514 is a wasteful number, since it uses less digits than its factorization.

645802514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65682.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 645802514 is about 25412.6447659428. The cubic root of 645802514 is about 864.3704481757.

The spelling of 645802514 in words is "six hundred forty-five million, eight hundred two thousand, five hundred fourteen".