71245086 has 16 divisors (see below), whose sum is σ = 155443968. Its totient is φ = 21589400.

The previous prime is 71245081. The next prime is 71245093. The reversal of 71245086 is 68054217.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71245081) 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, 539670 + ... + 539801.

It is an arithmetic number, because the mean of its divisors is an integer number (9715248).

Almost surely, 2^71245086 is an apocalyptic number.

71245086 is an abundant number, since it is smaller than the sum of its proper divisors (84198882).

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

71245086 is a wasteful number, since it uses less digits than its factorization.

71245086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079487.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 71245086 is about 8440.6804228095. The cubic root of 71245086 is about 414.5576861912.

The spelling of 71245086 in words is "seventy-one million, two hundred forty-five thousand, eighty-six".