82065291 has 16 divisors (see below), whose sum is σ = 136420608. Its totient is φ = 42631200.

The previous prime is 82065287. The next prime is 82065293. The reversal of 82065291 is 19256028.

It is not a de Polignac number, because 82065291 - 2² = 82065287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (82065293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177400 + ... + 177861.

It is an arithmetic number, because the mean of its divisors is an integer number (8526288).

Almost surely, 2^82065291 is an apocalyptic number.

82065291 is a deficient number, since it is larger than the sum of its proper divisors (54355317).

82065291 is a wasteful number, since it uses less digits than its factorization.

82065291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355282.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 82065291 is about 9058.9895131852. The cubic root of 82065291 is about 434.5634251170.

The spelling of 82065291 in words is "eighty-two million, sixty-five thousand, two hundred ninety-one".