86734921 has 8 divisors (see below), whose sum is σ = 106750784. Its totient is φ = 68625360.

The previous prime is 86734891. The next prime is 86734927. The reversal of 86734921 is 12943768.

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

It is a cyclic number.

It is not a de Polignac number, because 86734921 - 2⁵ = 86734889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86734927) 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 7 ways as a sum of consecutive naturals, for example, 476475 + ... + 476656.

It is an arithmetic number, because the mean of its divisors is an integer number (13343848).

Almost surely, 2^86734921 is an apocalyptic number.

It is an amenable number.

86734921 is a deficient number, since it is larger than the sum of its proper divisors (20015863).

86734921 is a wasteful number, since it uses less digits than its factorization.

86734921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953151.

The product of its digits is 72576, while the sum is 40.

The square root of 86734921 is about 9313.1584867863. The cubic root of 86734921 is about 442.6542745715.

The spelling of 86734921 in words is "eighty-six million, seven hundred thirty-four thousand, nine hundred twenty-one".