641514235 has 4 divisors (see below), whose sum is σ = 769817088. Its totient is φ = 513211384.

The previous prime is 641514199. The next prime is 641514241. The reversal of 641514235 is 532415146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641514235 - 2²³ = 633125627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641514197 and 641514206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64151419 + ... + 64151428.

It is an arithmetic number, because the mean of its divisors is an integer number (192454272).

Almost surely, 2^641514235 is an apocalyptic number.

641514235 is a deficient number, since it is larger than the sum of its proper divisors (128302853).

641514235 is a wasteful number, since it uses less digits than its factorization.

641514235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128302852.

The product of its digits is 14400, while the sum is 31.

The square root of 641514235 is about 25328.1312970381. The cubic root of 641514235 is about 862.4529907866.

It can be divided in two parts, 64151 and 4235, that added together give a palindrome (68386).

The spelling of 641514235 in words is "six hundred forty-one million, five hundred fourteen thousand, two hundred thirty-five".