71921466 has 32 divisors (see below), whose sum is σ = 160125120. Its totient is φ = 23928912.

The previous prime is 71921461. The next prime is 71921467. The reversal of 71921466 is 66412917.

71921466 is a `hidden beast` number, since 7 + 192 + 1 + 466 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 71921466.

It is not an unprimeable number, because it can be changed into a prime (71921461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40881 + ... + 42603.

It is an arithmetic number, because the mean of its divisors is an integer number (5003910).

Almost surely, 2^71921466 is an apocalyptic number.

71921466 is an abundant number, since it is smaller than the sum of its proper divisors (88203654).

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

71921466 is a wasteful number, since it uses less digits than its factorization.

71921466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507 (or 2501 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 71921466 is about 8480.6524513153. The cubic root of 71921466 is about 415.8654528206.

The spelling of 71921466 in words is "seventy-one million, nine hundred twenty-one thousand, four hundred sixty-six".