82012069 has 8 divisors (see below), whose sum is σ = 83580632. Its totient is φ = 80455680.

The previous prime is 82012067. The next prime is 82012103. The reversal of 82012069 is 96021028.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18809569 + 63202500 = 4337^2 + 7950^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 82012069 - 2¹ = 82012067 is a prime.

It is a super-2 number, since 2×82012069² = 13451958923321522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82012061) 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, 11179 + ... + 16999.

It is an arithmetic number, because the mean of its divisors is an integer number (10447579).

Almost surely, 2^82012069 is an apocalyptic number.

It is an amenable number.

82012069 is a deficient number, since it is larger than the sum of its proper divisors (1568563).

82012069 is a wasteful number, since it uses less digits than its factorization.

82012069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 82012069 is about 9056.0515126627. The cubic root of 82012069 is about 434.4694619813.

The spelling of 82012069 in words is "eighty-two million, twelve thousand, sixty-nine".