82782897 has 4 divisors (see below), whose sum is σ = 110377200. Its totient is φ = 55188596.

The previous prime is 82782893. The next prime is 82782899. The reversal of 82782897 is 79828728.

It is a happy number.

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 82782897 - 2² = 82782893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82782893) 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, 13797147 + ... + 13797152.

It is an arithmetic number, because the mean of its divisors is an integer number (27594300).

Almost surely, 2^82782897 is an apocalyptic number.

It is an amenable number.

82782897 is a deficient number, since it is larger than the sum of its proper divisors (27594303).

82782897 is a wasteful number, since it uses less digits than its factorization.

82782897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27594302.

The product of its digits is 903168, while the sum is 51.

The square root of 82782897 is about 9098.5107023073. The cubic root of 82782897 is about 435.8264062876.

It can be divided in two parts, 8278 and 2897, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 82782897 in words is "eighty-two million, seven hundred eighty-two thousand, eight hundred ninety-seven".