655446685 has 4 divisors (see below), whose sum is σ = 786536028. Its totient is φ = 524357344.

The previous prime is 655446677. The next prime is 655446697. The reversal of 655446685 is 586644556.

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 94420089 + 561026596 = 9717^2 + 23686^2 .

It is a cyclic number.

It is not a de Polignac number, because 655446685 - 2³ = 655446677 is a prime.

It is a super-2 number, since 2×655446685² = 859220713754978450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65544664 + ... + 65544673.

It is an arithmetic number, because the mean of its divisors is an integer number (196634007).

Almost surely, 2^655446685 is an apocalyptic number.

It is an amenable number.

655446685 is a deficient number, since it is larger than the sum of its proper divisors (131089343).

655446685 is a wasteful number, since it uses less digits than its factorization.

655446685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131089342.

The product of its digits is 3456000, while the sum is 49.

The square root of 655446685 is about 25601.6930104241. The cubic root of 655446685 is about 868.6519330326.

The spelling of 655446685 in words is "six hundred fifty-five million, four hundred forty-six thousand, six hundred eighty-five".