6157997 has 4 divisors (see below), whose sum is σ = 6425760. Its totient is φ = 5890236.

The previous prime is 6157993. The next prime is 6158003. The reversal of 6157997 is 7997516.

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 6157997 - 2² = 6157993 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 (6157993) 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, 133847 + ... + 133892.

It is an arithmetic number, because the mean of its divisors is an integer number (1606440).

Almost surely, 2^6157997 is an apocalyptic number.

It is an amenable number.

6157997 is a deficient number, since it is larger than the sum of its proper divisors (267763).

6157997 is a wasteful number, since it uses less digits than its factorization.

6157997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267762.

The product of its digits is 119070, while the sum is 44.

The square root of 6157997 is about 2481.5311805416. The cubic root of 6157997 is about 183.2932580908.

The spelling of 6157997 in words is "six million, one hundred fifty-seven thousand, nine hundred ninety-seven".