640100514 has 8 divisors (see below), whose sum is σ = 1280201040. Its totient is φ = 213366836.

The previous prime is 640100491. The next prime is 640100521. The reversal of 640100514 is 415001046.

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

640100514 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53341704 + ... + 53341715.

It is an arithmetic number, because the mean of its divisors is an integer number (160025130).

Almost surely, 2^640100514 is an apocalyptic number.

640100514 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

640100514 is a wasteful number, since it uses less digits than its factorization.

640100514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106683424.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 640100514 is about 25300.2077857080. The cubic root of 640100514 is about 861.8189884112.

The spelling of 640100514 in words is "six hundred forty million, one hundred thousand, five hundred fourteen".