6381977 has 8 divisors (see below), whose sum is σ = 7396992. Its totient is φ = 5392800.

The previous prime is 6381961. The next prime is 6381979. The reversal of 6381977 is 7791836.

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

It is not a de Polignac number, because 6381977 - 2⁴ = 6381961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6381979) 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, 5924 + ... + 6917.

It is an arithmetic number, because the mean of its divisors is an integer number (924624).

Almost surely, 2^6381977 is an apocalyptic number.

It is an amenable number.

6381977 is a deficient number, since it is larger than the sum of its proper divisors (1015015).

6381977 is a wasteful number, since it uses less digits than its factorization.

6381977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12919.

The product of its digits is 63504, while the sum is 41.

The square root of 6381977 is about 2526.2575086479. The cubic root of 6381977 is about 185.4891074992.

The spelling of 6381977 in words is "six million, three hundred eighty-one thousand, nine hundred seventy-seven".