82775629 has 4 divisors (see below), whose sum is σ = 83629084. Its totient is φ = 81922176.

The previous prime is 82775621. The next prime is 82775639. The reversal of 82775629 is 92657728.

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 37576900 + 45198729 = 6130^2 + 6723^2 .

It is a cyclic number.

It is not a de Polignac number, because 82775629 - 2³ = 82775621 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 (82775621) 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, 426582 + ... + 426775.

It is an arithmetic number, because the mean of its divisors is an integer number (20907271).

Almost surely, 2^82775629 is an apocalyptic number.

It is an amenable number.

82775629 is a deficient number, since it is larger than the sum of its proper divisors (853455).

82775629 is an equidigital number, since it uses as much as digits as its factorization.

82775629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853454.

The product of its digits is 423360, while the sum is 46.

The square root of 82775629 is about 9098.1112875146. Note that the first 3 decimals coincide. The cubic root of 82775629 is about 435.8136513219.

The spelling of 82775629 in words is "eighty-two million, seven hundred seventy-five thousand, six hundred twenty-nine".