71407086 has 16 divisors (see below), whose sum is σ = 142971264. Its totient is φ = 23776184.

The previous prime is 71407081. The next prime is 71407087. The reversal of 71407086 is 68070417.

It is a super-2 number, since 2×71407086² = 10197943862022792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71407081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 11951.

It is an arithmetic number, because the mean of its divisors is an integer number (8935704).

Almost surely, 2^71407086 is an apocalyptic number.

71407086 is an abundant number, since it is smaller than the sum of its proper divisors (71564178).

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

71407086 is a wasteful number, since it uses less digits than its factorization.

71407086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13095.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 71407086 is about 8450.2713565897. The cubic root of 71407086 is about 414.8716610943.

The spelling of 71407086 in words is "seventy-one million, four hundred seven thousand, eighty-six".