577997 has 4 divisors (see below), whose sum is σ = 660576. Its totient is φ = 495420.

The previous prime is 577981. The next prime is 578021. The reversal of 577997 is 799775.

577997 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 577997 - 2⁴ = 577981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577937) 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, 41279 + ... + 41292.

It is an arithmetic number, because the mean of its divisors is an integer number (165144).

2⁵⁷⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

577997 is a deficient number, since it is larger than the sum of its proper divisors (82579).

577997 is an equidigital number, since it uses as much as digits as its factorization.

577997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82578.

The product of its digits is 138915, while the sum is 44.

The square root of 577997 is about 760.2611393462. The cubic root of 577997 is about 83.2993977379.

The spelling of 577997 in words is "five hundred seventy-seven thousand, nine hundred ninety-seven".