641354407 has 2 divisors, whose sum is σ = 641354408. Its totient is φ = 641354406.

The previous prime is 641354369. The next prime is 641354429. The reversal of 641354407 is 704453146.

641354407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641354407 - 2⁷ = 641354279 is a prime.

It is a super-2 number, since 2×641354407² = 822670950756643298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641354437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320677203 + 320677204.

It is an arithmetic number, because the mean of its divisors is an integer number (320677204).

Almost surely, 2^641354407 is an apocalyptic number.

641354407 is a deficient number, since it is larger than the sum of its proper divisors (1).

641354407 is an equidigital number, since it uses as much as digits as its factorization.

641354407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 641354407 is about 25324.9759526046. The cubic root of 641354407 is about 862.3813604791.

The spelling of 641354407 in words is "six hundred forty-one million, three hundred fifty-four thousand, four hundred seven".