604861657 has 4 divisors (see below), whose sum is σ = 606385636. Its totient is φ = 603337680.

The previous prime is 604861651. The next prime is 604861661. The reversal of 604861657 is 756168406.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 389036176 + 215825481 = 19724^2 + 14691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604861657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604861651) 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, 761394 + ... + 762187.

It is an arithmetic number, because the mean of its divisors is an integer number (151596409).

Almost surely, 2^604861657 is an apocalyptic number.

It is an amenable number.

604861657 is a deficient number, since it is larger than the sum of its proper divisors (1523979).

604861657 is a wasteful number, since it uses less digits than its factorization.

604861657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523978.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 604861657 is about 24593.9353703306. The cubic root of 604861657 is about 845.7045846555.

The spelling of 604861657 in words is "six hundred four million, eight hundred sixty-one thousand, six hundred fifty-seven".