640553114 has 8 divisors (see below), whose sum is σ = 971625780. Its totient is φ = 316677856.

The previous prime is 640553113. The next prime is 640553119. The reversal of 640553114 is 411355046.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 608460889 + 32092225 = 24667^2 + 5665^2 .

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

It is not an unprimeable number, because it can be changed into a prime (640553113) 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, 1799129 + ... + 1799484.

Almost surely, 2^640553114 is an apocalyptic number.

640553114 is a deficient number, since it is larger than the sum of its proper divisors (331072666).

640553114 is a wasteful number, since it uses less digits than its factorization.

640553114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598704.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 640553114 is about 25309.1507957102. The cubic root of 640553114 is about 862.0220645260.

The spelling of 640553114 in words is "six hundred forty million, five hundred fifty-three thousand, one hundred fourteen".