82261715 has 8 divisors (see below), whose sum is σ = 99903888. Its totient is φ = 65016160.

The previous prime is 82261687. The next prime is 82261717. The reversal of 82261715 is 51716228.

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

It is not a de Polignac number, because 82261715 - 2¹⁸ = 81999571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82261717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98696 + ... + 99525.

It is an arithmetic number, because the mean of its divisors is an integer number (12487986).

Almost surely, 2^82261715 is an apocalyptic number.

82261715 is a deficient number, since it is larger than the sum of its proper divisors (17642173).

82261715 is a wasteful number, since it uses less digits than its factorization.

82261715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198309.

The product of its digits is 6720, while the sum is 32.

The square root of 82261715 is about 9069.8244194692. The cubic root of 82261715 is about 434.9098593335.

The spelling of 82261715 in words is "eighty-two million, two hundred sixty-one thousand, seven hundred fifteen".