6624157 has 4 divisors (see below), whose sum is σ = 6664960. Its totient is φ = 6583356.

The previous prime is 6624143. The next prime is 6624197. The reversal of 6624157 is 7514266.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6624157 is a prime.

It is a Duffinian number.

6624157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624127) 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, 20157 + ... + 20482.

It is an arithmetic number, because the mean of its divisors is an integer number (1666240).

Almost surely, 2^6624157 is an apocalyptic number.

It is an amenable number.

6624157 is a deficient number, since it is larger than the sum of its proper divisors (40803).

6624157 is a wasteful number, since it uses less digits than its factorization.

6624157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40802.

The product of its digits is 10080, while the sum is 31.

The square root of 6624157 is about 2573.7437712406. The cubic root of 6624157 is about 187.8063212124.

The spelling of 6624157 in words is "six million, six hundred twenty-four thousand, one hundred fifty-seven".