6408977 has 2 divisors, whose sum is σ = 6408978. Its totient is φ = 6408976.

The previous prime is 6408953. The next prime is 6408991. The reversal of 6408977 is 7798046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4289041 + 2119936 = 2071^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 6408977 - 2¹⁰ = 6407953 is a prime.

It is not a weakly prime, because it can be changed into another prime (6408907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204488 + 3204489.

It is an arithmetic number, because the mean of its divisors is an integer number (3204489).

Almost surely, 2^6408977 is an apocalyptic number.

It is an amenable number.

6408977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408977 is an equidigital number, since it uses as much as digits as its factorization.

6408977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 6408977 is about 2531.5957418198. The cubic root of 6408977 is about 185.7503201703.

The spelling of 6408977 in words is "six million, four hundred eight thousand, nine hundred seventy-seven".