83006557 has 8 divisors (see below), whose sum is σ = 84329280. Its totient is φ = 81691680.

The previous prime is 83006549. The next prime is 83006587. The reversal of 83006557 is 75560038.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 83006557 - 2³ = 83006549 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 (83006527) 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, 21544 + ... + 25102.

It is an arithmetic number, because the mean of its divisors is an integer number (10541160).

Almost surely, 2^83006557 is an apocalyptic number.

It is an amenable number.

83006557 is a deficient number, since it is larger than the sum of its proper divisors (1322723).

83006557 is a wasteful number, since it uses less digits than its factorization.

83006557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 83006557 is about 9110.7934341637. The cubic root of 83006557 is about 436.2185536291.

The spelling of 83006557 in words is "eighty-three million, six thousand, five hundred fifty-seven".