500400645 has 8 divisors (see below), whose sum is σ = 800641056. Its totient is φ = 266880336.

The previous prime is 500400623. The next prime is 500400671. The reversal of 500400645 is 546004005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 500400645 - 2⁷ = 500400517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16680007 + ... + 16680036.

It is an arithmetic number, because the mean of its divisors is an integer number (100080132).

Almost surely, 2^500400645 is an apocalyptic number.

It is an amenable number.

500400645 is a deficient number, since it is larger than the sum of its proper divisors (300240411).

500400645 is a wasteful number, since it uses less digits than its factorization.

500400645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360051.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 500400645 is about 22369.6366756369. The cubic root of 500400645 is about 793.9124641510.

The spelling of 500400645 in words is "five hundred million, four hundred thousand, six hundred forty-five".