24997613 has 4 divisors (see below), whose sum is σ = 25008480. Its totient is φ = 24986748.

The previous prime is 24997589. The next prime is 24997627. The reversal of 24997613 is 31679942.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 24997613 - 2⁶ = 24997549 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 (24997513) 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, 473 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (6252120).

Almost surely, 2^24997613 is an apocalyptic number.

It is an amenable number.

24997613 is a deficient number, since it is larger than the sum of its proper divisors (10867).

24997613 is an equidigital number, since it uses as much as digits as its factorization.

24997613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10866.

The product of its digits is 81648, while the sum is 41.

The square root of 24997613 is about 4999.7612943020. The cubic root of 24997613 is about 292.3924673513.

The spelling of 24997613 in words is "twenty-four million, nine hundred ninety-seven thousand, six hundred thirteen".