57646609 has 4 divisors (see below), whose sum is σ = 61037604. Its totient is φ = 54255616.

The previous prime is 57646607. The next prime is 57646619. The reversal of 57646609 is 90664675.

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 50808384 + 6838225 = 7128^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 57646609 - 2¹ = 57646607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57646607) 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, 1695472 + ... + 1695505.

It is an arithmetic number, because the mean of its divisors is an integer number (15259401).

Almost surely, 2^57646609 is an apocalyptic number.

It is an amenable number.

57646609 is a deficient number, since it is larger than the sum of its proper divisors (3390995).

57646609 is a wasteful number, since it uses less digits than its factorization.

57646609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390994.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 57646609 is about 7592.5364009664. The cubic root of 57646609 is about 386.2998935698.

The spelling of 57646609 in words is "fifty-seven million, six hundred forty-six thousand, six hundred nine".