71066040 has 32 divisors (see below), whose sum is σ = 213198480. Its totient is φ = 18950912.

The previous prime is 71065999. The next prime is 71066041. The reversal of 71066040 is 4066017.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 71066040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71066041) 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, 295989 + ... + 296228.

Almost surely, 2^71066040 is an apocalyptic number.

It is an amenable number.

71066040 is an abundant number, since it is smaller than the sum of its proper divisors (142132440).

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

71066040 is a wasteful number, since it uses less digits than its factorization.

71066040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592231 (or 592227 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 71066040 is about 8430.0676153872. The cubic root of 71066040 is about 414.2101199482.

The spelling of 71066040 in words is "seventy-one million, sixty-six thousand, forty".