86437540 has 24 divisors (see below), whose sum is σ = 207450432. Its totient is φ = 29635680.

The previous prime is 86437531. The next prime is 86437543. The reversal of 86437540 is 4573468.

It is a self number, because there is not a number n which added to its sum of digits gives 86437540.

It is not an unprimeable number, because it can be changed into a prime (86437543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308566 + ... + 308845.

It is an arithmetic number, because the mean of its divisors is an integer number (8643768).

Almost surely, 2^86437540 is an apocalyptic number.

It is an amenable number.

86437540 is an abundant number, since it is smaller than the sum of its proper divisors (121012892).

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

86437540 is a wasteful number, since it uses less digits than its factorization.

86437540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617427 (or 617425 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 86437540 is about 9297.1791420839. The cubic root of 86437540 is about 442.1477976690.

The spelling of 86437540 in words is "eighty-six million, four hundred thirty-seven thousand, five hundred forty".