71864722 has 4 divisors (see below), whose sum is σ = 107797086. Its totient is φ = 35932360.

The previous prime is 71864717. The next prime is 71864743. The reversal of 71864722 is 22746817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22746817 = 29 ⋅784373.

It can be written as a sum of positive squares in only one way, i.e., 40717161 + 31147561 = 6381^2 + 5581^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17966179 + ... + 17966182.

Almost surely, 2^71864722 is an apocalyptic number.

71864722 is a deficient number, since it is larger than the sum of its proper divisors (35932364).

71864722 is a wasteful number, since it uses less digits than its factorization.

71864722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35932363.

The product of its digits is 37632, while the sum is 37.

The square root of 71864722 is about 8477.3062938648. The cubic root of 71864722 is about 415.7560553565.

The spelling of 71864722 in words is "seventy-one million, eight hundred sixty-four thousand, seven hundred twenty-two".