6690577 has 2 divisors, whose sum is σ = 6690578. Its totient is φ = 6690576.

The previous prime is 6690569. The next prime is 6690583. The reversal of 6690577 is 7750966.

6690577 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4260096 + 2430481 = 2064^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 6690577 - 2³ = 6690569 is a prime.

It is not a weakly prime, because it can be changed into another prime (6690517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345288 + 3345289.

It is an arithmetic number, because the mean of its divisors is an integer number (3345289).

Almost surely, 2^6690577 is an apocalyptic number.

It is an amenable number.

6690577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690577 is an equidigital number, since it uses as much as digits as its factorization.

6690577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 6690577 is about 2586.6149694147. The cubic root of 6690577 is about 188.4319421652.

The spelling of 6690577 in words is "six million, six hundred ninety thousand, five hundred seventy-seven".