86521270 has 32 divisors (see below), whose sum is σ = 171507456. Its totient is φ = 31164000.

The previous prime is 86521229. The next prime is 86521271. The reversal of 86521270 is 7212568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8095 + ... + 15445.

It is an arithmetic number, because the mean of its divisors is an integer number (5359608).

Almost surely, 2^86521270 is an apocalyptic number.

86521270 is a deficient number, since it is larger than the sum of its proper divisors (84986186).

86521270 is a wasteful number, since it uses less digits than its factorization.

86521270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 86521270 is about 9301.6810308675. The cubic root of 86521270 is about 442.2905176328.

The spelling of 86521270 in words is "eighty-six million, five hundred twenty-one thousand, two hundred seventy".