82065731 has 16 divisors (see below), whose sum is σ = 94659840. Its totient is φ = 70362720.

The previous prime is 82065727. The next prime is 82065733. The reversal of 82065731 is 13756028.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82065731 - 2² = 82065727 is a prime.

It is a super-2 number, since 2×82065731² = 13469568409128722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82065733) 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, 54221 + ... + 55713.

It is an arithmetic number, because the mean of its divisors is an integer number (5916240).

Almost surely, 2^82065731 is an apocalyptic number.

82065731 is a deficient number, since it is larger than the sum of its proper divisors (12594109).

82065731 is a wasteful number, since it uses less digits than its factorization.

82065731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 82065731 is about 9059.0137984220. The cubic root of 82065731 is about 434.5642017652.

The spelling of 82065731 in words is "eighty-two million, sixty-five thousand, seven hundred thirty-one".