82704406 has 4 divisors (see below), whose sum is σ = 124056612. Its totient is φ = 41352202.

The previous prime is 82704383. The next prime is 82704449. The reversal of 82704406 is 60440728.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20676100 + ... + 20676103.

It is an arithmetic number, because the mean of its divisors is an integer number (31014153).

Almost surely, 2^82704406 is an apocalyptic number.

82704406 is a deficient number, since it is larger than the sum of its proper divisors (41352206).

82704406 is a wasteful number, since it uses less digits than its factorization.

82704406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41352205.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 82704406 is about 9094.1962811455. The cubic root of 82704406 is about 435.6886190995.

The spelling of 82704406 in words is "eighty-two million, seven hundred four thousand, four hundred six".