86021345 has 4 divisors (see below), whose sum is σ = 103225620. Its totient is φ = 68817072.

The previous prime is 86021329. The next prime is 86021359. The reversal of 86021345 is 54312068.

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 63856081 + 22165264 = 7991^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 86021345 - 2⁴ = 86021329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8602130 + ... + 8602139.

It is an arithmetic number, because the mean of its divisors is an integer number (25806405).

Almost surely, 2^86021345 is an apocalyptic number.

It is an amenable number.

86021345 is a deficient number, since it is larger than the sum of its proper divisors (17204275).

86021345 is a wasteful number, since it uses less digits than its factorization.

86021345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17204274.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 86021345 is about 9274.7692693673. The cubic root of 86021345 is about 441.4370114156.

The spelling of 86021345 in words is "eighty-six million, twenty-one thousand, three hundred forty-five".