6418977 has 4 divisors (see below), whose sum is σ = 8558640. Its totient is φ = 4279316.

The previous prime is 6418967. The next prime is 6418981. The reversal of 6418977 is 7798146.

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 a cyclic number.

It is not a de Polignac number, because 6418977 - 2⁶ = 6418913 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6418927) 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, 1069827 + ... + 1069832.

It is an arithmetic number, because the mean of its divisors is an integer number (2139660).

Almost surely, 2^6418977 is an apocalyptic number.

It is an amenable number.

6418977 is a deficient number, since it is larger than the sum of its proper divisors (2139663).

6418977 is a wasteful number, since it uses less digits than its factorization.

6418977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139662.

The product of its digits is 84672, while the sum is 42.

The square root of 6418977 is about 2533.5700108740. The cubic root of 6418977 is about 185.8468794154.

The spelling of 6418977 in words is "six million, four hundred eighteen thousand, nine hundred seventy-seven".