641524413 has 4 divisors (see below), whose sum is σ = 855365888. Its totient is φ = 427682940.

The previous prime is 641524409. The next prime is 641524421. The reversal of 641524413 is 314425146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 641524413 - 2² = 641524409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641524483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106920733 + ... + 106920738.

It is an arithmetic number, because the mean of its divisors is an integer number (213841472).

Almost surely, 2^641524413 is an apocalyptic number.

It is an amenable number.

641524413 is a deficient number, since it is larger than the sum of its proper divisors (213841475).

641524413 is a wasteful number, since it uses less digits than its factorization.

641524413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213841474.

The product of its digits is 11520, while the sum is 30.

The square root of 641524413 is about 25328.3322190783. The cubic root of 641524413 is about 862.4575518702.

Adding to 641524413 its reverse (314425146), we get a palindrome (955949559).

The spelling of 641524413 in words is "six hundred forty-one million, five hundred twenty-four thousand, four hundred thirteen".