6357981 has 16 divisors (see below), whose sum is σ = 9732224. Its totient is φ = 3616704.

The previous prime is 6357977. The next prime is 6357991. The reversal of 6357981 is 1897536.

6357981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6357981 - 2² = 6357977 is a prime.

It is a super-2 number, since 2×6357981² = 80847844792722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6357941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5271 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (608264).

Almost surely, 2^6357981 is an apocalyptic number.

It is an amenable number.

6357981 is a deficient number, since it is larger than the sum of its proper divisors (3374243).

6357981 is a wasteful number, since it uses less digits than its factorization.

6357981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its digits is 45360, while the sum is 39.

The square root of 6357981 is about 2521.5037180222. The cubic root of 6357981 is about 185.2563381012.

The spelling of 6357981 in words is "six million, three hundred fifty-seven thousand, nine hundred eighty-one".