640035614 has 8 divisors (see below), whose sum is σ = 969374640. Its totient is φ = 316910736.

The previous prime is 640035569. The next prime is 640035619. The reversal of 640035614 is 416530046.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640035619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553279 + ... + 1553690.

It is an arithmetic number, because the mean of its divisors is an integer number (121171830).

Almost surely, 2^640035614 is an apocalyptic number.

640035614 is a deficient number, since it is larger than the sum of its proper divisors (329339026).

640035614 is a wasteful number, since it uses less digits than its factorization.

640035614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107074.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 640035614 is about 25298.9251550338. The cubic root of 640035614 is about 861.7898607240.

The spelling of 640035614 in words is "six hundred forty million, thirty-five thousand, six hundred fourteen".