23680557 has 6 divisors (see below), whose sum is σ = 34205262. Its totient is φ = 15787032.

The previous prime is 23680549. The next prime is 23680567. The reversal of 23680557 is 75508632.

23680557 is a `hidden beast` number, since 23 + 6 + 80 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23677956 + 2601 = 4866^2 + 51^2 .

It is not a de Polignac number, because 23680557 - 2³ = 23680549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23680537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1315578 + ... + 1315595.

It is an arithmetic number, because the mean of its divisors is an integer number (5700877).

Almost surely, 2^23680557 is an apocalyptic number.

It is an amenable number.

23680557 is a deficient number, since it is larger than the sum of its proper divisors (10524705).

23680557 is a wasteful number, since it uses less digits than its factorization.

23680557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631179 (or 2631176 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 23680557 is about 4866.2672552995. The cubic root of 23680557 is about 287.1644256041.

The spelling of 23680557 in words is "twenty-three million, six hundred eighty thousand, five hundred fifty-seven".