640300371 has 8 divisors (see below), whose sum is σ = 853925520. Its totient is φ = 426771072.

The previous prime is 640300343. The next prime is 640300373. The reversal of 640300371 is 173003046.

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

It is not a de Polignac number, because 640300371 - 2¹³ = 640292179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (640300373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6570 + ... + 36383.

It is an arithmetic number, because the mean of its divisors is an integer number (106740690).

Almost surely, 2^640300371 is an apocalyptic number.

640300371 is a deficient number, since it is larger than the sum of its proper divisors (213625149).

640300371 is a wasteful number, since it uses less digits than its factorization.

640300371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47925.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 640300371 is about 25304.1571880986. The cubic root of 640300371 is about 861.9086736148.

The spelling of 640300371 in words is "six hundred forty million, three hundred thousand, three hundred seventy-one".