641382077 has 8 divisors (see below), whose sum is σ = 738359616. Its totient is φ = 545742432.

The previous prime is 641382059. The next prime is 641382083. The reversal of 641382077 is 770283146.

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

It is a cyclic number.

It is not a de Polignac number, because 641382077 - 2²² = 637187773 is a prime.

It is a super-2 number, since 2×641382077² = 822741937393667858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641382077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641382877) 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, 333443 + ... + 335360.

It is an arithmetic number, because the mean of its divisors is an integer number (92294952).

Almost surely, 2^641382077 is an apocalyptic number.

It is an amenable number.

641382077 is a deficient number, since it is larger than the sum of its proper divisors (96977539).

641382077 is a wasteful number, since it uses less digits than its factorization.

641382077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668947.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 641382077 is about 25325.5222453556. The cubic root of 641382077 is about 862.3937622281.

The spelling of 641382077 in words is "six hundred forty-one million, three hundred eighty-two thousand, seventy-seven".