641403207 has 24 divisors (see below), whose sum is σ = 935308400. Its totient is φ = 423543168.

The previous prime is 641403199. The next prime is 641403223. The reversal of 641403207 is 702304146.

It is not a de Polignac number, because 641403207 - 2³ = 641403199 is a prime.

It is a super-2 number, since 2×641403207² = 822796147899769698, 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 (641403107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599469 + ... + 600537.

Almost surely, 2^641403207 is an apocalyptic number.

641403207 is a deficient number, since it is larger than the sum of its proper divisors (293905193).

641403207 is a wasteful number, since it uses less digits than its factorization.

641403207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 641403207 is about 25325.9394100199. The cubic root of 641403207 is about 862.4032324959.

The spelling of 641403207 in words is "six hundred forty-one million, four hundred three thousand, two hundred seven".