6631577 has 4 divisors (see below), whose sum is σ = 6643920. Its totient is φ = 6619236.

The previous prime is 6631571. The next prime is 6631579. The reversal of 6631577 is 7751366.

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 6631577 - 2⁸ = 6631321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6631571) 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, 5327 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (1660980).

Almost surely, 2^6631577 is an apocalyptic number.

It is an amenable number.

6631577 is a deficient number, since it is larger than the sum of its proper divisors (12343).

6631577 is a wasteful number, since it uses less digits than its factorization.

6631577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12342.

The product of its digits is 26460, while the sum is 35.

The square root of 6631577 is about 2575.1848477342. The cubic root of 6631577 is about 187.8764183288.

The spelling of 6631577 in words is "six million, six hundred thirty-one thousand, five hundred seventy-seven".