82623997 has 4 divisors (see below), whose sum is σ = 84857116. Its totient is φ = 80390880.

The previous prime is 82623977. The next prime is 82624001. The reversal of 82623997 is 79932628.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78251716 + 4372281 = 8846^2 + 2091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82623997 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 (82623977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116504 + ... + 1116577.

It is an arithmetic number, because the mean of its divisors is an integer number (21214279).

Almost surely, 2^82623997 is an apocalyptic number.

It is an amenable number.

82623997 is a deficient number, since it is larger than the sum of its proper divisors (2233119).

82623997 is a wasteful number, since it uses less digits than its factorization.

82623997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233118.

The product of its digits is 326592, while the sum is 46.

The square root of 82623997 is about 9089.7743096295. The cubic root of 82623997 is about 435.5473745248.

The spelling of 82623997 in words is "eighty-two million, six hundred twenty-three thousand, nine hundred ninety-seven".