6381957 has 4 divisors (see below), whose sum is σ = 8509280. Its totient is φ = 4254636.

The previous prime is 6381941. The next prime is 6381961. The reversal of 6381957 is 7591836.

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 not a de Polignac number, because 6381957 - 2⁴ = 6381941 is a prime.

It is a D-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 (6381457) 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, 1063657 + ... + 1063662.

It is an arithmetic number, because the mean of its divisors is an integer number (2127320).

Almost surely, 2^6381957 is an apocalyptic number.

It is an amenable number.

6381957 is a deficient number, since it is larger than the sum of its proper divisors (2127323).

6381957 is a wasteful number, since it uses less digits than its factorization.

6381957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127322.

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

The square root of 6381957 is about 2526.2535502202. The cubic root of 6381957 is about 185.4889137355.

It can be divided in two parts, 63 and 81957, that multiplied together give a triangular number (5163291 = T₃₂₁₃).

The spelling of 6381957 in words is "six million, three hundred eighty-one thousand, nine hundred fifty-seven".