86254640 has 20 divisors (see below), whose sum is σ = 200542224. Its totient is φ = 34501824.

The previous prime is 86254639. The next prime is 86254657. The reversal of 86254640 is 4645268.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 86254640.

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, 539012 + ... + 539171.

Almost surely, 2^86254640 is an apocalyptic number.

86254640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86254640 is an abundant number, since it is smaller than the sum of its proper divisors (114287584).

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

86254640 is a wasteful number, since it uses less digits than its factorization.

86254640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078196 (or 1078190 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 86254640 is about 9287.3376163462. The cubic root of 86254640 is about 441.8357189964.

The spelling of 86254640 in words is "eighty-six million, two hundred fifty-four thousand, six hundred forty".