71689754 has 4 divisors (see below), whose sum is σ = 107534634. Its totient is φ = 35844876.

The previous prime is 71689741. The next prime is 71689789. The reversal of 71689754 is 45798617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45798617 = 61 ⋅750797.

It can be written as a sum of positive squares in only one way, i.e., 43864129 + 27825625 = 6623^2 + 5275^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71689699 and 71689708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17922437 + ... + 17922440.

Almost surely, 2^71689754 is an apocalyptic number.

71689754 is a deficient number, since it is larger than the sum of its proper divisors (35844880).

71689754 is a wasteful number, since it uses less digits than its factorization.

71689754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35844879.

The product of its digits is 423360, while the sum is 47.

The square root of 71689754 is about 8466.9802172912. The cubic root of 71689754 is about 415.4183694019.

The spelling of 71689754 in words is "seventy-one million, six hundred eighty-nine thousand, seven hundred fifty-four".