6247042657 has 4 divisors (see below), whose sum is σ = 6253398720. Its totient is φ = 6240686596.

The previous prime is 6247042643. The next prime is 6247042679. The reversal of 6247042657 is 7562407426.

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 not a de Polignac number, because 6247042657 - 2¹⁵ = 6247009889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6247042057) 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, 3176557 + ... + 3178522.

It is an arithmetic number, because the mean of its divisors is an integer number (1563349680).

Almost surely, 2^6247042657 is an apocalyptic number.

It is an amenable number.

6247042657 is a deficient number, since it is larger than the sum of its proper divisors (6356063).

6247042657 is an equidigital number, since it uses as much as digits as its factorization.

6247042657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356062.

The product of its (nonzero) digits is 564480, while the sum is 43.

The square root of 6247042657 is about 79038.2354117297. The cubic root of 6247042657 is about 1841.7251716236.

The spelling of 6247042657 in words is "six billion, two hundred forty-seven million, forty-two thousand, six hundred fifty-seven".