82157067 has 6 divisors (see below), whose sum is σ = 118671332. Its totient is φ = 54771372.

The previous prime is 82157059. The next prime is 82157093. The reversal of 82157067 is 76075128.

82157067 is a `hidden beast` number, since 8 + 21 + 570 + 67 = 666.

It is not a de Polignac number, because 82157067 - 2³ = 82157059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82157027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4564273 + ... + 4564290.

Almost surely, 2^82157067 is an apocalyptic number.

82157067 is a deficient number, since it is larger than the sum of its proper divisors (36514265).

82157067 is a wasteful number, since it uses less digits than its factorization.

82157067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128569 (or 9128566 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 82157067 is about 9064.0535633898. The cubic root of 82157067 is about 434.7253597360.

The spelling of 82157067 in words is "eighty-two million, one hundred fifty-seven thousand, sixty-seven".