82623887 has 4 divisors (see below), whose sum is σ = 82984920. Its totient is φ = 82262856.

The previous prime is 82623883. The next prime is 82623899. The reversal of 82623887 is 78832628.

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 82623887 - 2² = 82623883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82623883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180173 + ... + 180630.

It is an arithmetic number, because the mean of its divisors is an integer number (20746230).

Almost surely, 2^82623887 is an apocalyptic number.

82623887 is a deficient number, since it is larger than the sum of its proper divisors (361033).

82623887 is a wasteful number, since it uses less digits than its factorization.

82623887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361032.

The product of its digits is 258048, while the sum is 44.

The square root of 82623887 is about 9089.7682588722. The cubic root of 82623887 is about 435.5471812386.

The spelling of 82623887 in words is "eighty-two million, six hundred twenty-three thousand, eight hundred eighty-seven".