641363390 has 8 divisors (see below), whose sum is σ = 1154454120. Its totient is φ = 256545352.

The previous prime is 641363389. The next prime is 641363399. The reversal of 641363390 is 93363146.

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

It is a super-2 number, since 2×641363390² = 822693996064584200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641363390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641363399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32068160 + ... + 32068179.

It is an arithmetic number, because the mean of its divisors is an integer number (144306765).

Almost surely, 2^641363390 is an apocalyptic number.

641363390 is a deficient number, since it is larger than the sum of its proper divisors (513090730).

641363390 is a wasteful number, since it uses less digits than its factorization.

641363390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64136346.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 641363390 is about 25325.1533065449. The cubic root of 641363390 is about 862.3853867167.

The spelling of 641363390 in words is "six hundred forty-one million, three hundred sixty-three thousand, three hundred ninety".