82870537 has 4 divisors (see below), whose sum is σ = 83645136. Its totient is φ = 82095940.

The previous prime is 82870531. The next prime is 82870559. The reversal of 82870537 is 73507828.

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 a de Polignac number, because none of the positive numbers 2^k-82870537 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 82870537.

It is not an unprimeable number, because it can be changed into a prime (82870531) 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, 387139 + ... + 387352.

It is an arithmetic number, because the mean of its divisors is an integer number (20911284).

Almost surely, 2^82870537 is an apocalyptic number.

It is an amenable number.

82870537 is a deficient number, since it is larger than the sum of its proper divisors (774599).

82870537 is a wasteful number, since it uses less digits than its factorization.

82870537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774598.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 82870537 is about 9103.3256011196. The cubic root of 82870537 is about 435.9801512301.

The spelling of 82870537 in words is "eighty-two million, eight hundred seventy thousand, five hundred thirty-seven".