645033214 has 16 divisors (see below), whose sum is σ = 1126636128. Its totient is φ = 271226592.

The previous prime is 645033209. The next prime is 645033241. The reversal of 645033214 is 412330546.

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, 433917 + ... + 435400.

It is an arithmetic number, because the mean of its divisors is an integer number (70414758).

Almost surely, 2^645033214 is an apocalyptic number.

645033214 is a deficient number, since it is larger than the sum of its proper divisors (481602914).

645033214 is a wasteful number, since it uses less digits than its factorization.

645033214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869379.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 645033214 is about 25397.5040899692. The cubic root of 645033214 is about 864.0270901643.

The spelling of 645033214 in words is "six hundred forty-five million, thirty-three thousand, two hundred fourteen".