6157985 has 4 divisors (see below), whose sum is σ = 7389588. Its totient is φ = 4926384.

The previous prime is 6157979. The next prime is 6157993. The reversal of 6157985 is 5897516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2486929 + 3671056 = 1577^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 6157985 - 2⁴ = 6157969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615794 + ... + 615803.

It is an arithmetic number, because the mean of its divisors is an integer number (1847397).

Almost surely, 2^6157985 is an apocalyptic number.

It is an amenable number.

6157985 is a deficient number, since it is larger than the sum of its proper divisors (1231603).

6157985 is a wasteful number, since it uses less digits than its factorization.

6157985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231602.

The product of its digits is 75600, while the sum is 41.

The square root of 6157985 is about 2481.5287626784. The cubic root of 6157985 is about 183.2931390304.

The spelling of 6157985 in words is "six million, one hundred fifty-seven thousand, nine hundred eighty-five".