71690205 has 8 divisors (see below), whose sum is σ = 114704352. Its totient is φ = 38234768.

The previous prime is 71690167. The next prime is 71690219. The reversal of 71690205 is 50209617.

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 71690205 - 2⁶ = 71690141 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389659 + ... + 2389688.

It is an arithmetic number, because the mean of its divisors is an integer number (14338044).

Almost surely, 2^71690205 is an apocalyptic number.

It is an amenable number.

71690205 is a deficient number, since it is larger than the sum of its proper divisors (43014147).

71690205 is a wasteful number, since it uses less digits than its factorization.

71690205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779355.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 71690205 is about 8467.0068501212. The cubic root of 71690205 is about 415.4192405320.

The spelling of 71690205 in words is "seventy-one million, six hundred ninety thousand, two hundred five".