86212061 has 4 divisors (see below), whose sum is σ = 92843772. Its totient is φ = 79580352.

The previous prime is 86212057. The next prime is 86212067. The reversal of 86212061 is 16021268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42902500 + 43309561 = 6550^2 + 6581^2 .

It is a cyclic number.

It is not a de Polignac number, because 86212061 - 2² = 86212057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86212061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86212067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315836 + ... + 3315861.

It is an arithmetic number, because the mean of its divisors is an integer number (23210943).

Almost surely, 2^86212061 is an apocalyptic number.

It is an amenable number.

86212061 is a deficient number, since it is larger than the sum of its proper divisors (6631711).

86212061 is a wasteful number, since it uses less digits than its factorization.

86212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631710.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 86212061 is about 9285.0450187385. The cubic root of 86212061 is about 441.7630039921.

The spelling of 86212061 in words is "eighty-six million, two hundred twelve thousand, sixty-one".