6401613 has 24 divisors (see below), whose sum is σ = 9436608. Its totient is φ = 3852288.

The previous prime is 6401609. The next prime is 6401621. The reversal of 6401613 is 3161046.

It is not a de Polignac number, because 6401613 - 2² = 6401609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6401613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24781 + ... + 25037.

It is an arithmetic number, because the mean of its divisors is an integer number (393192).

Almost surely, 2^6401613 is an apocalyptic number.

It is an amenable number.

6401613 is a deficient number, since it is larger than the sum of its proper divisors (3034995).

6401613 is a wasteful number, since it uses less digits than its factorization.

6401613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6401613 is about 2530.1409051671. The cubic root of 6401613 is about 185.6791497068.

Adding to 6401613 its reverse (3161046), we get a palindrome (9562659).

The spelling of 6401613 in words is "six million, four hundred one thousand, six hundred thirteen".