641754611 has 2 divisors, whose sum is σ = 641754612. Its totient is φ = 641754610.

The previous prime is 641754569. The next prime is 641754637. The reversal of 641754611 is 116457146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641754611 - 2²² = 637560307 is a prime.

It is a super-2 number, since 2×641754611² = 823697961479522642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641754691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320877305 + 320877306.

It is an arithmetic number, because the mean of its divisors is an integer number (320877306).

Almost surely, 2^641754611 is an apocalyptic number.

641754611 is a deficient number, since it is larger than the sum of its proper divisors (1).

641754611 is an equidigital number, since it uses as much as digits as its factorization.

641754611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 641754611 is about 25332.8760901718. The cubic root of 641754611 is about 862.5606979897.

It can be divided in two parts, 64175 and 4611, that added together give a palindrome (68786).

The spelling of 641754611 in words is "six hundred forty-one million, seven hundred fifty-four thousand, six hundred eleven".