71890927 has 4 divisors (see below), whose sum is σ = 75674680. Its totient is φ = 68107176.

The previous prime is 71890877. The next prime is 71890937. The reversal of 71890927 is 72909817.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71890927 - 2¹⁹ = 71366639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71890937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891848 + ... + 1891885.

It is an arithmetic number, because the mean of its divisors is an integer number (18918670).

Almost surely, 2^71890927 is an apocalyptic number.

71890927 is a deficient number, since it is larger than the sum of its proper divisors (3783753).

71890927 is a wasteful number, since it uses less digits than its factorization.

71890927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783752.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 71890927 is about 8478.8517500897. The cubic root of 71890927 is about 415.8065834558.

The spelling of 71890927 in words is "seventy-one million, eight hundred ninety thousand, nine hundred twenty-seven".