645141234 has 16 divisors (see below), whose sum is σ = 1290532320. Its totient is φ = 215005440.

The previous prime is 645141229. The next prime is 645141247. The reversal of 645141234 is 432141546.

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, 51282 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (80658270).

Almost surely, 2^645141234 is an apocalyptic number.

645141234 is an abundant number, since it is smaller than the sum of its proper divisors (645391086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645141234 is a wasteful number, since it uses less digits than its factorization.

645141234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20825.

The product of its digits is 11520, while the sum is 30.

The square root of 645141234 is about 25399.6305878649. The cubic root of 645141234 is about 864.0753186869.

The spelling of 645141234 in words is "six hundred forty-five million, one hundred forty-one thousand, two hundred thirty-four".