82866403 has 4 divisors (see below), whose sum is σ = 83599848. Its totient is φ = 82132960.

The previous prime is 82866367. The next prime is 82866409. The reversal of 82866403 is 30466828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82866403 - 2⁹ = 82865891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82866409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366553 + ... + 366778.

It is an arithmetic number, because the mean of its divisors is an integer number (20899962).

Almost surely, 2^82866403 is an apocalyptic number.

82866403 is a deficient number, since it is larger than the sum of its proper divisors (733445).

82866403 is a wasteful number, since it uses less digits than its factorization.

82866403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733444.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 82866403 is about 9103.0985384099. The cubic root of 82866403 is about 435.9729014805.

The spelling of 82866403 in words is "eighty-two million, eight hundred sixty-six thousand, four hundred three".