6157986 has 8 divisors (see below), whose sum is σ = 12315984. Its totient is φ = 2052660.

The previous prime is 6157979. The next prime is 6157993. The reversal of 6157986 is 6897516.

It is an interprime number because it is at equal distance from previous prime (6157979) and next prime (6157993).

It is a sphenic number, since it is the product of 3 distinct primes.

6157986 is an admirable 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, 513160 + ... + 513171.

It is an arithmetic number, because the mean of its divisors is an integer number (1539498).

Almost surely, 2^6157986 is an apocalyptic number.

6157986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6157986 is a wasteful number, since it uses less digits than its factorization.

6157986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026336.

The product of its digits is 90720, while the sum is 42.

The square root of 6157986 is about 2481.5289641671. The cubic root of 6157986 is about 183.2931489521.

The spelling of 6157986 in words is "six million, one hundred fifty-seven thousand, nine hundred eighty-six".