571640983 has 8 divisors (see below), whose sum is σ = 586499760. Its totient is φ = 556825920.

The previous prime is 571640981. The next prime is 571640999. The reversal of 571640983 is 389046175.

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

It is not a de Polignac number, because 571640983 - 2¹ = 571640981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571640981) 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, 16441 + ... + 37597.

It is an arithmetic number, because the mean of its divisors is an integer number (73312470).

Almost surely, 2^571640983 is an apocalyptic number.

571640983 is a deficient number, since it is larger than the sum of its proper divisors (14858777).

571640983 is a wasteful number, since it uses less digits than its factorization.

571640983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857.

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

The square root of 571640983 is about 23909.0146806597. The cubic root of 571640983 is about 829.9293417375.

The spelling of 571640983 in words is "five hundred seventy-one million, six hundred forty thousand, nine hundred eighty-three".