57698143 has 4 divisors (see below), whose sum is σ = 57743728. Its totient is φ = 57652560.

The previous prime is 57698129. The next prime is 57698159. The reversal of 57698143 is 34189675.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57698143 is a prime.

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 57698143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57698243) 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, 20838 + ... + 23443.

It is an arithmetic number, because the mean of its divisors is an integer number (14435932).

Almost surely, 2^57698143 is an apocalyptic number.

57698143 is a deficient number, since it is larger than the sum of its proper divisors (45585).

57698143 is a wasteful number, since it uses less digits than its factorization.

57698143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45584.

The product of its digits is 181440, while the sum is 43.

The square root of 57698143 is about 7595.9293703931. The cubic root of 57698143 is about 386.4149720325.

The spelling of 57698143 in words is "fifty-seven million, six hundred ninety-eight thousand, one hundred forty-three".