82661415 has 8 divisors (see below), whose sum is σ = 132258288. Its totient is φ = 44086080.

The previous prime is 82661387. The next prime is 82661431. The reversal of 82661415 is 51416628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82661415 - 2¹² = 82657319 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755366 + ... + 2755395.

It is an arithmetic number, because the mean of its divisors is an integer number (16532286).

Almost surely, 2^82661415 is an apocalyptic number.

82661415 is a deficient number, since it is larger than the sum of its proper divisors (49596873).

82661415 is a wasteful number, since it uses less digits than its factorization.

82661415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510769.

The product of its digits is 11520, while the sum is 33.

The square root of 82661415 is about 9091.8323235748. The cubic root of 82661415 is about 435.6131135057.

The spelling of 82661415 in words is "eighty-two million, six hundred sixty-one thousand, four hundred fifteen".