86970321 has 8 divisors (see below), whose sum is σ = 128844960. Its totient is φ = 57980196.

The previous prime is 86970287. The next prime is 86970329. The reversal of 86970321 is 12307968.

It is a de Polignac number, because none of the positive numbers 2^k-86970321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86970329) 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, 1610535 + ... + 1610588.

It is an arithmetic number, because the mean of its divisors is an integer number (16105620).

Almost surely, 2^86970321 is an apocalyptic number.

It is an amenable number.

86970321 is a deficient number, since it is larger than the sum of its proper divisors (41874639).

86970321 is a wasteful number, since it uses less digits than its factorization.

86970321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221132 (or 3221126 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 86970321 is about 9325.7879559853. The cubic root of 86970321 is about 443.0543698247.

The spelling of 86970321 in words is "eighty-six million, nine hundred seventy thousand, three hundred twenty-one".