82573786 has 4 divisors (see below), whose sum is σ = 123860682. Its totient is φ = 41286892.

The previous prime is 82573769. The next prime is 82573787. The reversal of 82573786 is 68737528.

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

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 18653761 = 7995^2 + 4319^2 .

It is not an unprimeable number, because it can be changed into a prime (82573787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20643445 + ... + 20643448.

Almost surely, 2^82573786 is an apocalyptic number.

82573786 is a deficient number, since it is larger than the sum of its proper divisors (41286896).

82573786 is a wasteful number, since it uses less digits than its factorization.

82573786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41286895.

The product of its digits is 564480, while the sum is 46.

The square root of 82573786 is about 9087.0119401264. The cubic root of 82573786 is about 435.4591285691.

The spelling of 82573786 in words is "eighty-two million, five hundred seventy-three thousand, seven hundred eighty-six".