71932217 has 4 divisors (see below), whose sum is σ = 82208256. Its totient is φ = 61656180.

The previous prime is 71932207. The next prime is 71932241. The reversal of 71932217 is 71223917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71932217 - 2⁶ = 71932153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71932207) 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, 5138009 + ... + 5138022.

It is an arithmetic number, because the mean of its divisors is an integer number (20552064).

Almost surely, 2^71932217 is an apocalyptic number.

It is an amenable number.

71932217 is a deficient number, since it is larger than the sum of its proper divisors (10276039).

71932217 is a wasteful number, since it uses less digits than its factorization.

71932217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10276038.

The product of its digits is 5292, while the sum is 32.

The square root of 71932217 is about 8481.2862821626. The cubic root of 71932217 is about 415.8861733230.

The spelling of 71932217 in words is "seventy-one million, nine hundred thirty-two thousand, two hundred seventeen".