82726785 has 16 divisors (see below), whose sum is σ = 147070080. Its totient is φ = 44120880.

The previous prime is 82726771. The next prime is 82726789. The reversal of 82726785 is 58762728.

It is not a de Polignac number, because 82726785 - 2⁸ = 82726529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 82726785.

It is not an unprimeable number, because it can be changed into a prime (82726789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306261 + ... + 306530.

It is an arithmetic number, because the mean of its divisors is an integer number (9191880).

Almost surely, 2^82726785 is an apocalyptic number.

It is an amenable number.

82726785 is a deficient number, since it is larger than the sum of its proper divisors (64343295).

82726785 is a wasteful number, since it uses less digits than its factorization.

82726785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612805 (or 612799 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 82726785 is about 9095.4265980217. The cubic root of 82726785 is about 435.7279132427.

The spelling of 82726785 in words is "eighty-two million, seven hundred twenty-six thousand, seven hundred eighty-five".