6491577 has 4 divisors (see below), whose sum is σ = 8655440. Its totient is φ = 4327716.

The previous prime is 6491561. The next prime is 6491623. The reversal of 6491577 is 7751946.

6491577 is digitally balanced in base 3 and base 4, because in such bases 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 not a de Polignac number, because 6491577 - 2⁴ = 6491561 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6491557) 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, 1081927 + ... + 1081932.

It is an arithmetic number, because the mean of its divisors is an integer number (2163860).

Almost surely, 2^6491577 is an apocalyptic number.

It is an amenable number.

6491577 is a deficient number, since it is larger than the sum of its proper divisors (2163863).

6491577 is a wasteful number, since it uses less digits than its factorization.

6491577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163862.

The product of its digits is 52920, while the sum is 39.

The square root of 6491577 is about 2547.8573350955. The cubic root of 6491577 is about 186.5449103248.

The spelling of 6491577 in words is "six million, four hundred ninety-one thousand, five hundred seventy-seven".