82857061 has 4 divisors (see below), whose sum is σ = 94693792. Its totient is φ = 71020332.

The previous prime is 82857053. The next prime is 82857077. The reversal of 82857061 is 16075828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82857061 - 2³ = 82857053 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 82857061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82857161) 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, 5918355 + ... + 5918368.

It is an arithmetic number, because the mean of its divisors is an integer number (23673448).

Almost surely, 2^82857061 is an apocalyptic number.

It is an amenable number.

82857061 is a deficient number, since it is larger than the sum of its proper divisors (11836731).

82857061 is a wasteful number, since it uses less digits than its factorization.

82857061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11836730.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 82857061 is about 9102.5854019614. The cubic root of 82857061 is about 435.9565176315.

The spelling of 82857061 in words is "eighty-two million, eight hundred fifty-seven thousand, sixty-one".