71222807 has 4 divisors (see below), whose sum is σ = 72390456. Its totient is φ = 70055160.

The previous prime is 71222803. The next prime is 71222819. The reversal of 71222807 is 70822217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70822217 = 797 ⋅88861.

It is a cyclic number.

It is not a de Polignac number, because 71222807 - 2² = 71222803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71222807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71222803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583733 + ... + 583854.

It is an arithmetic number, because the mean of its divisors is an integer number (18097614).

Almost surely, 2^71222807 is an apocalyptic number.

71222807 is a deficient number, since it is larger than the sum of its proper divisors (1167649).

71222807 is a wasteful number, since it uses less digits than its factorization.

71222807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167648.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 71222807 is about 8439.3605800440. The cubic root of 71222807 is about 414.5144696735.

The spelling of 71222807 in words is "seventy-one million, two hundred twenty-two thousand, eight hundred seven".