641004151 has 4 divisors (see below), whose sum is σ = 646994952. Its totient is φ = 635013352.

The previous prime is 641004149. The next prime is 641004157. The reversal of 641004151 is 151400146.

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 641004151 - 2¹ = 641004149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641004157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2995240 + ... + 2995453.

It is an arithmetic number, because the mean of its divisors is an integer number (161748738).

Almost surely, 2^641004151 is an apocalyptic number.

641004151 is a deficient number, since it is larger than the sum of its proper divisors (5990801).

641004151 is a wasteful number, since it uses less digits than its factorization.

641004151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990800.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 641004151 is about 25318.0597795329. The cubic root of 641004151 is about 862.2243441997.

Adding to 641004151 its reverse (151400146), we get a palindrome (792404297).

The spelling of 641004151 in words is "six hundred forty-one million, four thousand, one hundred fifty-one".