6428977 has 4 divisors (see below), whose sum is σ = 6446320. Its totient is φ = 6411636.

The previous prime is 6428971. The next prime is 6428987. The reversal of 6428977 is 7798246.

6428977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6428977 - 2³ = 6428969 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 4² + 2¹⁷ + 8 + 9⁶ + 7³ + 7⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428971) 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, 8103 + ... + 8860.

It is an arithmetic number, because the mean of its divisors is an integer number (1611580).

Almost surely, 2^6428977 is an apocalyptic number.

It is an amenable number.

6428977 is a deficient number, since it is larger than the sum of its proper divisors (17343).

6428977 is a wasteful number, since it uses less digits than its factorization.

6428977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342.

The product of its digits is 169344, while the sum is 43.

The square root of 6428977 is about 2535.5427426884. The cubic root of 6428977 is about 185.9433384274.

The spelling of 6428977 in words is "six million, four hundred twenty-eight thousand, nine hundred seventy-seven".