641914435 has 4 divisors (see below), whose sum is σ = 770297328. Its totient is φ = 513531544.

The previous prime is 641914423. The next prime is 641914501. The reversal of 641914435 is 534419146.

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 641914435 - 2⁷ = 641914307 is a prime.

It is a super-2 number, since 2×641914435² = 824108283722738450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641914394 and 641914403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64191439 + ... + 64191448.

It is an arithmetic number, because the mean of its divisors is an integer number (192574332).

Almost surely, 2^641914435 is an apocalyptic number.

641914435 is a deficient number, since it is larger than the sum of its proper divisors (128382893).

641914435 is a wasteful number, since it uses less digits than its factorization.

641914435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128382892.

The product of its digits is 51840, while the sum is 37.

The square root of 641914435 is about 25336.0303717848. The cubic root of 641914435 is about 862.6322967265.

The spelling of 641914435 in words is "six hundred forty-one million, nine hundred fourteen thousand, four hundred thirty-five".