641393005 has 8 divisors (see below), whose sum is σ = 839641824. Its totient is φ = 466467600.

The previous prime is 641392993. The next prime is 641393009. The reversal of 641393005 is 500393146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-641393005 is a prime.

It is a super-2 number, since 2×641393005² = 822769973725860050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641393009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5830791 + ... + 5830900.

It is an arithmetic number, because the mean of its divisors is an integer number (104955228).

Almost surely, 2^641393005 is an apocalyptic number.

It is an amenable number.

641393005 is a deficient number, since it is larger than the sum of its proper divisors (198248819).

641393005 is a wasteful number, since it uses less digits than its factorization.

641393005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11661707.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 641393005 is about 25325.7379951701. The cubic root of 641393005 is about 862.3986600812.

The spelling of 641393005 in words is "six hundred forty-one million, three hundred ninety-three thousand, five".