641060491 has 8 divisors (see below), whose sum is σ = 650700000. Its totient is φ = 631438080.

The previous prime is 641060477. The next prime is 641060507. The reversal of 641060491 is 194060146.

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 641060491 - 2¹¹ = 641058443 is a prime.

It is a super-2 number, since 2×641060491² = 821917106242322162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641060471) 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, 85065 + ... + 92293.

It is an arithmetic number, because the mean of its divisors is an integer number (81337500).

Almost surely, 2^641060491 is an apocalyptic number.

641060491 is a deficient number, since it is larger than the sum of its proper divisors (9639509).

641060491 is a wasteful number, since it uses less digits than its factorization.

641060491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8549.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 641060491 is about 25319.1723995868. The cubic root of 641060491 is about 862.2496047206.

The spelling of 641060491 in words is "six hundred forty-one million, sixty thousand, four hundred ninety-one".