82006415 has 4 divisors (see below), whose sum is σ = 98407704. Its totient is φ = 65605128.

The previous prime is 82006411. The next prime is 82006429. The reversal of 82006415 is 51460028.

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 82006415 - 2² = 82006411 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 (82006411) 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, 8200637 + ... + 8200646.

It is an arithmetic number, because the mean of its divisors is an integer number (24601926).

Almost surely, 2^82006415 is an apocalyptic number.

82006415 is a deficient number, since it is larger than the sum of its proper divisors (16401289).

82006415 is a wasteful number, since it uses less digits than its factorization.

82006415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16401288.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 82006415 is about 9055.7393403300. The cubic root of 82006415 is about 434.4594774882.

The spelling of 82006415 in words is "eighty-two million, six thousand, four hundred fifteen".