71664343 has 8 divisors (see below), whose sum is σ = 77193216. Its totient is φ = 66336600.

The previous prime is 71664323. The next prime is 71664349. The reversal of 71664343 is 34346617.

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

It is not a de Polignac number, because 71664343 - 2⁵ = 71664311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71664299 and 71664308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71664349) 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, 49543 + ... + 50968.

It is an arithmetic number, because the mean of its divisors is an integer number (9649152).

Almost surely, 2^71664343 is an apocalyptic number.

71664343 is a deficient number, since it is larger than the sum of its proper divisors (5528873).

71664343 is a wasteful number, since it uses less digits than its factorization.

71664343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100565.

The product of its digits is 36288, while the sum is 34.

The square root of 71664343 is about 8465.4794902592. The cubic root of 71664343 is about 415.3692808266.

The spelling of 71664343 in words is "seventy-one million, six hundred sixty-four thousand, three hundred forty-three".