71670043 has 8 divisors (see below), whose sum is σ = 72698400. Its totient is φ = 70649280.

The previous prime is 71670019. The next prime is 71670077. The reversal of 71670043 is 34007617.

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 71670043 - 2²⁵ = 38115611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71669993 and 71670020.

It is not an unprimeable number, because it can be changed into a prime (71670083) 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, 18658 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (9087300).

Almost surely, 2^71670043 is an apocalyptic number.

71670043 is a deficient number, since it is larger than the sum of its proper divisors (1028357).

71670043 is a wasteful number, since it uses less digits than its factorization.

71670043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 71670043 is about 8465.8161449443. The cubic root of 71670043 is about 415.3802930075.

The spelling of 71670043 in words is "seventy-one million, six hundred seventy thousand, forty-three".