6499977 has 16 divisors (see below), whose sum is σ = 9612480. Its totient is φ = 3873600.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499977 is 7799946.

It is not a de Polignac number, because 6499977 - 2⁸ = 6499721 is a prime.

It is a d-powerful number, because it can be written as 6³ + 4⁶ + 9⁴ + 9⁵ + 9⁷ + 7⁷ + 7⁷ .

6499977 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6499177) 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, 399 + ... + 3627.

It is an arithmetic number, because the mean of its divisors is an integer number (600780).

Almost surely, 2^6499977 is an apocalyptic number.

It is an amenable number.

6499977 is a deficient number, since it is larger than the sum of its proper divisors (3112503).

6499977 is a wasteful number, since it uses less digits than its factorization.

6499977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304.

The product of its digits is 857304, while the sum is 51.

The square root of 6499977 is about 2549.5052461213. The cubic root of 6499977 is about 186.6253377181.

The spelling of 6499977 in words is "six million, four hundred ninety-nine thousand, nine hundred seventy-seven".