6669577 has 4 divisors (see below), whose sum is σ = 6674836. Its totient is φ = 6664320.

The previous prime is 6669547. The next prime is 6669587. The reversal of 6669577 is 7759666.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 95481 + 6574096 = 309^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 6669577 - 2¹⁵ = 6636809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669547) 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, 577 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (1668709).

Almost surely, 2^6669577 is an apocalyptic number.

It is an amenable number.

6669577 is a deficient number, since it is larger than the sum of its proper divisors (5259).

6669577 is a wasteful number, since it uses less digits than its factorization.

6669577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258.

The product of its digits is 476280, while the sum is 46.

The square root of 6669577 is about 2582.5524196035. The cubic root of 6669577 is about 188.2345890771.

The spelling of 6669577 in words is "six million, six hundred sixty-nine thousand, five hundred seventy-seven".