82661061 has 8 divisors (see below), whose sum is σ = 125959744. Its totient is φ = 47234880.

The previous prime is 82661053. The next prime is 82661063. The reversal of 82661061 is 16016628.

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

It is not a de Polignac number, because 82661061 - 2³ = 82661053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82661063) 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, 1968100 + ... + 1968141.

It is an arithmetic number, because the mean of its divisors is an integer number (15744968).

Almost surely, 2^82661061 is an apocalyptic number.

It is an amenable number.

82661061 is a deficient number, since it is larger than the sum of its proper divisors (43298683).

82661061 is a wasteful number, since it uses less digits than its factorization.

82661061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936251.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 82661061 is about 9091.8128555311. The cubic root of 82661061 is about 435.6124916627.

Adding to 82661061 its reverse (16016628), we get a palindrome (98677689).

The spelling of 82661061 in words is "eighty-two million, six hundred sixty-one thousand, sixty-one".