71222636 has 12 divisors (see below), whose sum is σ = 124718328. Its totient is φ = 35588832.

The previous prime is 71222633. The next prime is 71222647. The reversal of 71222636 is 63622217.

It is a junction number, because it is equal to n+sod(n) for n = 71222599 and 71222608.

It is not an unprimeable number, because it can be changed into a prime (71222633) 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, 2960 + ... + 12296.

It is an arithmetic number, because the mean of its divisors is an integer number (10393194).

Almost surely, 2^71222636 is an apocalyptic number.

It is an amenable number.

71222636 is a deficient number, since it is larger than the sum of its proper divisors (53495692).

71222636 is a wasteful number, since it uses less digits than its factorization.

71222636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11248 (or 11246 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 71222636 is about 8439.3504489386. The cubic root of 71222636 is about 414.5141379350.

The spelling of 71222636 in words is "seventy-one million, two hundred twenty-two thousand, six hundred thirty-six".