641214473 has 8 divisors (see below), whose sum is σ = 649369800. Its totient is φ = 633080448.

The previous prime is 641214463. The next prime is 641214487. The reversal of 641214473 is 374412146.

It can be written as a sum of positive squares in 4 ways, for example, as 321233929 + 319980544 = 17923^2 + 17888^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641214473 is a prime.

It is a super-2 number, since 2×641214473² = 822312000769335458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641214433) 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, 60323 + ... + 70151.

It is an arithmetic number, because the mean of its divisors is an integer number (81171225).

Almost surely, 2^641214473 is an apocalyptic number.

It is an amenable number.

641214473 is a deficient number, since it is larger than the sum of its proper divisors (8155327).

641214473 is an equidigital number, since it uses as much as digits as its factorization.

641214473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651.

The product of its digits is 16128, while the sum is 32.

The square root of 641214473 is about 25322.2130351990. The cubic root of 641214473 is about 862.3186363183.

The spelling of 641214473 in words is "six hundred forty-one million, two hundred fourteen thousand, four hundred seventy-three".