86523780 has 48 divisors (see below), whose sum is σ = 276877440. Its totient is φ = 19776768.

The previous prime is 86523763. The next prime is 86523809. The reversal of 86523780 is 8732568.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102585 + ... + 103424.

It is an arithmetic number, because the mean of its divisors is an integer number (5768280).

Almost surely, 2^86523780 is an apocalyptic number.

It is an amenable number.

86523780 is an abundant number, since it is smaller than the sum of its proper divisors (190353660).

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

86523780 is a wasteful number, since it uses less digits than its factorization.

86523780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206028 (or 206026 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 86523780 is about 9301.8159517376. The cubic root of 86523780 is about 442.2947945713.

The spelling of 86523780 in words is "eighty-six million, five hundred twenty-three thousand, seven hundred eighty".