82772347 has 4 divisors (see below), whose sum is σ = 94596976. Its totient is φ = 70947720.

The previous prime is 82772323. The next prime is 82772353. The reversal of 82772347 is 74327728.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82772347 is a prime.

It is a super-2 number, since 2×82772347² = 13702522855776818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82776347) 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, 5912304 + ... + 5912317.

It is an arithmetic number, because the mean of its divisors is an integer number (23649244).

Almost surely, 2^82772347 is an apocalyptic number.

82772347 is a deficient number, since it is larger than the sum of its proper divisors (11824629).

82772347 is a wasteful number, since it uses less digits than its factorization.

82772347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824628.

The product of its digits is 131712, while the sum is 40.

The square root of 82772347 is about 9097.9309186210. The cubic root of 82772347 is about 435.8078913363.

The spelling of 82772347 in words is "eighty-two million, seven hundred seventy-two thousand, three hundred forty-seven".