71886489 has 32 divisors (see below), whose sum is σ = 107412480. Its totient is φ = 42547200.

The previous prime is 71886469. The next prime is 71886499. The reversal of 71886489 is 98468817.

It is not a de Polignac number, because 71886489 - 2⁸ = 71886233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (71886469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64267 + ... + 65375.

It is an arithmetic number, because the mean of its divisors is an integer number (3356640).

Almost surely, 2^71886489 is an apocalyptic number.

It is an amenable number.

71886489 is a deficient number, since it is larger than the sum of its proper divisors (35525991).

71886489 is a wasteful number, since it uses less digits than its factorization.

71886489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its digits is 774144, while the sum is 51.

The square root of 71886489 is about 8478.5900360850. The cubic root of 71886489 is about 415.7980270326.

The spelling of 71886489 in words is "seventy-one million, eight hundred eighty-six thousand, four hundred eighty-nine".