71668830 has 16 divisors (see below), whose sum is σ = 172005264. Its totient is φ = 19111680.

The previous prime is 71668829. The next prime is 71668841. The reversal of 71668830 is 3886617.

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, 1194451 + ... + 1194510.

It is an arithmetic number, because the mean of its divisors is an integer number (10750329).

Almost surely, 2^71668830 is an apocalyptic number.

71668830 is an abundant number, since it is smaller than the sum of its proper divisors (100336434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71668830 is a wasteful number, since it uses less digits than its factorization.

71668830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388971.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 71668830 is about 8465.7445035862. The cubic root of 71668830 is about 415.3779495870.

The spelling of 71668830 in words is "seventy-one million, six hundred sixty-eight thousand, eight hundred thirty".