71974373 has 2 divisors, whose sum is σ = 71974374. Its totient is φ = 71974372.

The previous prime is 71974367. The next prime is 71974381. The reversal of 71974373 is 37347917.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68939809 + 3034564 = 8303^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 71974373 - 2²⁰ = 70925797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71974373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71974673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35987186 + 35987187.

It is an arithmetic number, because the mean of its divisors is an integer number (35987187).

Almost surely, 2^71974373 is an apocalyptic number.

It is an amenable number.

71974373 is a deficient number, since it is larger than the sum of its proper divisors (1).

71974373 is an equidigital number, since it uses as much as digits as its factorization.

71974373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 41.

The square root of 71974373 is about 8483.7711543865. The cubic root of 71974373 is about 415.9674010605.

The spelling of 71974373 in words is "seventy-one million, nine hundred seventy-four thousand, three hundred seventy-three".