71466989 has 16 divisors (see below), whose sum is σ = 80424960. Its totient is φ = 62944560.

The previous prime is 71466971. The next prime is 71467001. The reversal of 71466989 is 98966417.

It is a cyclic number.

It is not a de Polignac number, because 71466989 - 2²⁴ = 54689773 is a prime.

It is a super-2 number, since 2×71466989² = 10215061033452242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71466959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65204 + ... + 66290.

It is an arithmetic number, because the mean of its divisors is an integer number (5026560).

Almost surely, 2^71466989 is an apocalyptic number.

It is an amenable number.

71466989 is a deficient number, since it is larger than the sum of its proper divisors (8957971).

71466989 is a wasteful number, since it uses less digits than its factorization.

71466989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 653184, while the sum is 50.

The square root of 71466989 is about 8453.8150559378. The cubic root of 71466989 is about 414.9876398312.

The spelling of 71466989 in words is "seventy-one million, four hundred sixty-six thousand, nine hundred eighty-nine".