86421516 has 12 divisors (see below), whose sum is σ = 201650232. Its totient is φ = 28807168.

The previous prime is 86421493. The next prime is 86421539. The reversal of 86421516 is 61512468.

It is an interprime number because it is at equal distance from previous prime (86421493) and next prime (86421539).

It is a tau number, because it is divible by the number of its divisors (12).

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, 3600885 + ... + 3600908.

It is an arithmetic number, because the mean of its divisors is an integer number (16804186).

Almost surely, 2^86421516 is an apocalyptic number.

It is an amenable number.

86421516 is an abundant number, since it is smaller than the sum of its proper divisors (115228716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86421516 is a wasteful number, since it uses less digits than its factorization.

86421516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201800 (or 7201798 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 86421516 is about 9296.3173353753. The cubic root of 86421516 is about 442.1204738382.

The spelling of 86421516 in words is "eighty-six million, four hundred twenty-one thousand, five hundred sixteen".