577663649 has 4 divisors (see below), whose sum is σ = 584623536. Its totient is φ = 570703764.

The previous prime is 577663627. The next prime is 577663657. The reversal of 577663649 is 946366775.

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 577663649 - 2¹⁶ = 577598113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 577663649.

It is not an unprimeable number, because it can be changed into a prime (577663249) 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, 3479819 + ... + 3479984.

It is an arithmetic number, because the mean of its divisors is an integer number (146155884).

Almost surely, 2^577663649 is an apocalyptic number.

It is an amenable number.

577663649 is a deficient number, since it is larger than the sum of its proper divisors (6959887).

577663649 is an equidigital number, since it uses as much as digits as its factorization.

577663649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959886.

The product of its digits is 5715360, while the sum is 53.

The square root of 577663649 is about 24034.6343637676. The cubic root of 577663649 is about 832.8338077044.

The spelling of 577663649 in words is "five hundred seventy-seven million, six hundred sixty-three thousand, six hundred forty-nine".