71244066 has 16 divisors (see below), whose sum is σ = 142848288. Its totient is φ = 23688000.

The previous prime is 71244029. The next prime is 71244067. The reversal of 71244066 is 66044217.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71244067) 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, 12400 + ... + 17211.

It is an arithmetic number, because the mean of its divisors is an integer number (8928018).

Almost surely, 2^71244066 is an apocalyptic number.

71244066 is an abundant number, since it is smaller than the sum of its proper divisors (71604222).

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

71244066 is a wasteful number, since it uses less digits than its factorization.

71244066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30017.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 71244066 is about 8440.6200009241. The cubic root of 71244066 is about 414.5557078052. Note that the first 3 decimals are identical.

The spelling of 71244066 in words is "seventy-one million, two hundred forty-four thousand, sixty-six".