640414366 has 8 divisors (see below), whose sum is σ = 993746520. Its totient is φ = 309165528.

The previous prime is 640414297. The next prime is 640414373. The reversal of 640414366 is 663414046.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5520756 + ... + 5520871.

It is an arithmetic number, because the mean of its divisors is an integer number (124218315).

Almost surely, 2^640414366 is an apocalyptic number.

640414366 is a deficient number, since it is larger than the sum of its proper divisors (353332154).

640414366 is a wasteful number, since it uses less digits than its factorization.

640414366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041658.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 640414366 is about 25306.4095833447. The cubic root of 640414366 is about 861.9598201565.

The spelling of 640414366 in words is "six hundred forty million, four hundred fourteen thousand, three hundred sixty-six".