82627819 has 4 divisors (see below), whose sum is σ = 82673944. Its totient is φ = 82581696.

The previous prime is 82627807. The next prime is 82627823. The reversal of 82627819 is 91872628.

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

It is a cyclic number.

It is not a de Polignac number, because 82627819 - 2²³ = 74239211 is a prime.

It is a super-2 number, since 2×82627819² = 13654712945393522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82627019) 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, 20262 + ... + 23995.

It is an arithmetic number, because the mean of its divisors is an integer number (20668486).

Almost surely, 2^82627819 is an apocalyptic number.

82627819 is a deficient number, since it is larger than the sum of its proper divisors (46125).

82627819 is a wasteful number, since it uses less digits than its factorization.

82627819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46124.

The product of its digits is 96768, while the sum is 43.

The square root of 82627819 is about 9089.9845434412. The cubic root of 82627819 is about 435.5540902348.

The spelling of 82627819 in words is "eighty-two million, six hundred twenty-seven thousand, eight hundred nineteen".