82620793 has 4 divisors (see below), whose sum is σ = 82659060. Its totient is φ = 82582528.

The previous prime is 82620787. The next prime is 82620809. The reversal of 82620793 is 39702628.

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 60793209 + 21827584 = 7797^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 82620793 - 2⁹ = 82620281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82620763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15688 + ... + 20281.

It is an arithmetic number, because the mean of its divisors is an integer number (20664765).

Almost surely, 2^82620793 is an apocalyptic number.

It is an amenable number.

82620793 is a deficient number, since it is larger than the sum of its proper divisors (38267).

82620793 is a wasteful number, since it uses less digits than its factorization.

82620793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38266.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 82620793 is about 9089.5980659213. The cubic root of 82620793 is about 435.5417445550.

The spelling of 82620793 in words is "eighty-two million, six hundred twenty thousand, seven hundred ninety-three".