71612533 has 8 divisors (see below), whose sum is σ = 72217728. Its totient is φ = 71010384.

The previous prime is 71612479. The next prime is 71612543. The reversal of 71612533 is 33521617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71612533 - 2¹³ = 71604341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71612543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72360 + ... + 73342.

It is an arithmetic number, because the mean of its divisors is an integer number (9027216).

Almost surely, 2^71612533 is an apocalyptic number.

It is an amenable number.

71612533 is a deficient number, since it is larger than the sum of its proper divisors (605195).

71612533 is a wasteful number, since it uses less digits than its factorization.

71612533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 3780, while the sum is 28.

The square root of 71612533 is about 8462.4188622403. The cubic root of 71612533 is about 415.2691591125.

The spelling of 71612533 in words is "seventy-one million, six hundred twelve thousand, five hundred thirty-three".