71262889 has 4 divisors (see below), whose sum is σ = 73720260. Its totient is φ = 68805520.

The previous prime is 71262881. The next prime is 71262907. The reversal of 71262889 is 98826217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98826217 = 7 ⋅14118031.

It can be written as a sum of positive squares in 2 ways, for example, as 44997264 + 26265625 = 6708^2 + 5125^2 .

It is a cyclic number.

It is not a de Polignac number, because 71262889 - 2³ = 71262881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71262881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228642 + ... + 1228699.

It is an arithmetic number, because the mean of its divisors is an integer number (18430065).

Almost surely, 2^71262889 is an apocalyptic number.

It is an amenable number.

71262889 is a deficient number, since it is larger than the sum of its proper divisors (2457371).

71262889 is a wasteful number, since it uses less digits than its factorization.

71262889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457370.

The product of its digits is 96768, while the sum is 43.

The square root of 71262889 is about 8441.7349520108. The cubic root of 71262889 is about 414.5922137460.

The spelling of 71262889 in words is "seventy-one million, two hundred sixty-two thousand, eight hundred eighty-nine".