71754669 has 18 divisors (see below), whose sum is σ = 120568110. Its totient is φ = 41002416.

The previous prime is 71754653. The next prime is 71754713. The reversal of 71754669 is 96645717.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 4678569 = 8190^2 + 2163^2 .

It is not a de Polignac number, because 71754669 - 2⁴ = 71754653 is a prime.

It is a super-2 number, since 2×71754669² = 10297465046599122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71754629) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 80914 + ... + 81795.

Almost surely, 2^71754669 is an apocalyptic number.

It is an amenable number.

71754669 is a deficient number, since it is larger than the sum of its proper divisors (48813441).

71754669 is a wasteful number, since it uses less digits than its factorization.

71754669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162729 (or 162719 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 71754669 is about 8470.8127709211. The cubic root of 71754669 is about 415.5437185466.

The spelling of 71754669 in words is "seventy-one million, seven hundred fifty-four thousand, six hundred sixty-nine".