71862091 has 8 divisors (see below), whose sum is σ = 82211040. Its totient is φ = 61533888.

The previous prime is 71862067. The next prime is 71862137. The reversal of 71862091 is 19026817.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71862091 - 2⁷ = 71861963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71862041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3135 + ... + 12391.

It is an arithmetic number, because the mean of its divisors is an integer number (10276380).

Almost surely, 2^71862091 is an apocalyptic number.

71862091 is a deficient number, since it is larger than the sum of its proper divisors (10348949).

71862091 is a wasteful number, since it uses less digits than its factorization.

71862091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10373.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 71862091 is about 8477.1511134343. The cubic root of 71862091 is about 415.7509816221.

The spelling of 71862091 in words is "seventy-one million, eight hundred sixty-two thousand, ninety-one".