71679331 has 4 divisors (see below), whose sum is σ = 72854464. Its totient is φ = 70504200.

The previous prime is 71679317. The next prime is 71679367. The reversal of 71679331 is 13397617.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71679331 - 2¹¹ = 71677283 is a prime.

It is a super-2 number, since 2×71679331² = 10275852985215122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71679301) 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, 587475 + ... + 587596.

It is an arithmetic number, because the mean of its divisors is an integer number (18213616).

Almost surely, 2^71679331 is an apocalyptic number.

71679331 is a deficient number, since it is larger than the sum of its proper divisors (1175133).

71679331 is a wasteful number, since it uses less digits than its factorization.

71679331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175132.

The product of its digits is 23814, while the sum is 37.

The square root of 71679331 is about 8466.3646862157. The cubic root of 71679331 is about 415.3982358157.

It can be divided in two parts, 71679 and 331, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 71679331 in words is "seventy-one million, six hundred seventy-nine thousand, three hundred thirty-one".