82768993 has 4 divisors (see below), whose sum is σ = 83083968. Its totient is φ = 82454020.

The previous prime is 82768991. The next prime is 82769047. The reversal of 82768993 is 39986728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82768993 - 2¹ = 82768991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82768993.

It is not an unprimeable number, because it can be changed into a prime (82768991) 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, 157093 + ... + 157618.

It is an arithmetic number, because the mean of its divisors is an integer number (20770992).

Almost surely, 2^82768993 is an apocalyptic number.

It is an amenable number.

82768993 is a deficient number, since it is larger than the sum of its proper divisors (314975).

82768993 is a wasteful number, since it uses less digits than its factorization.

82768993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314974.

The product of its digits is 1306368, while the sum is 52.

The square root of 82768993 is about 9097.7465891285. The cubic root of 82768993 is about 435.8020048317.

The spelling of 82768993 in words is "eighty-two million, seven hundred sixty-eight thousand, nine hundred ninety-three".