71923237 has 2 divisors, whose sum is σ = 71923238. Its totient is φ = 71923236.

The previous prime is 71923223. The next prime is 71923253. The reversal of 71923237 is 73232917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46662561 + 25260676 = 6831^2 + 5026^2 .

It is a cyclic number.

It is not a de Polignac number, because 71923237 - 2⁷ = 71923109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71923217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35961618 + 35961619.

It is an arithmetic number, because the mean of its divisors is an integer number (35961619).

Almost surely, 2^71923237 is an apocalyptic number.

It is an amenable number.

71923237 is a deficient number, since it is larger than the sum of its proper divisors (1).

71923237 is an equidigital number, since it uses as much as digits as its factorization.

71923237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 71923237 is about 8480.7568648087. The cubic root of 71923237 is about 415.8688662274.

The spelling of 71923237 in words is "seventy-one million, nine hundred twenty-three thousand, two hundred thirty-seven".