57647969 has 8 divisors (see below), whose sum is σ = 63144360. Its totient is φ = 52385536.

The previous prime is 57647929. The next prime is 57647971. The reversal of 57647969 is 96974675.

It can be written as a sum of positive squares in 4 ways, for example, as 28217344 + 29430625 = 5312^2 + 5425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57647969 is a prime.

It is a super-3 number, since 3×57647969³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 57647969.

It is not an unprimeable number, because it can be changed into a prime (57647929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57974 + ... + 58959.

It is an arithmetic number, because the mean of its divisors is an integer number (7893045).

Almost surely, 2^57647969 is an apocalyptic number.

It is an amenable number.

57647969 is a deficient number, since it is larger than the sum of its proper divisors (5496391).

57647969 is a wasteful number, since it uses less digits than its factorization.

57647969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116979.

The product of its digits is 2857680, while the sum is 53.

The square root of 57647969 is about 7592.6259620766. The cubic root of 57647969 is about 386.3029314109.

The spelling of 57647969 in words is "fifty-seven million, six hundred forty-seven thousand, nine hundred sixty-nine".