86520478 has 8 divisors (see below), whose sum is σ = 141579000. Its totient is φ = 39327480.

The previous prime is 86520443. The next prime is 86520487. The reversal of 86520478 is 87402568.

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

It is a super-2 number, since 2×86520478² = 14971586226696968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86520478.

It is a congruent number.

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, 1966353 + ... + 1966396.

It is an arithmetic number, because the mean of its divisors is an integer number (17697375).

Almost surely, 2^86520478 is an apocalyptic number.

86520478 is a deficient number, since it is larger than the sum of its proper divisors (55058522).

86520478 is a wasteful number, since it uses less digits than its factorization.

86520478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932762.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 86520478 is about 9301.6384578202. The cubic root of 86520478 is about 442.2891680796.

The spelling of 86520478 in words is "eighty-six million, five hundred twenty thousand, four hundred seventy-eight".