6157978 has 16 divisors (see below), whose sum is σ = 9858240. Its totient is φ = 2874816.

The previous prime is 6157973. The next prime is 6157979. The reversal of 6157978 is 8797516.

It is not an unprimeable number, because it can be changed into a prime (6157973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4075 + ... + 5377.

It is an arithmetic number, because the mean of its divisors is an integer number (616140).

Almost surely, 2^6157978 is an apocalyptic number.

6157978 is a deficient number, since it is larger than the sum of its proper divisors (3700262).

6157978 is a wasteful number, since it uses less digits than its factorization.

6157978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its digits is 105840, while the sum is 43.

The square root of 6157978 is about 2481.5273522571. The cubic root of 6157978 is about 183.2930695785.

The spelling of 6157978 in words is "six million, one hundred fifty-seven thousand, nine hundred seventy-eight".