71974673 has 2 divisors, whose sum is σ = 71974674. Its totient is φ = 71974672.

The previous prime is 71974633. The next prime is 71974687. The reversal of 71974673 is 37647917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65739664 + 6235009 = 8108^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 71974673 - 2⁸ = 71974417 is a prime.

It is not a weakly prime, because it can be changed into another prime (71974633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35987336 + 35987337.

It is an arithmetic number, because the mean of its divisors is an integer number (35987337).

Almost surely, 2^71974673 is an apocalyptic number.

It is an amenable number.

71974673 is a deficient number, since it is larger than the sum of its proper divisors (1).

71974673 is an equidigital number, since it uses as much as digits as its factorization.

71974673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 71974673 is about 8483.7888351844. The cubic root of 71974673 is about 415.9679789979.

The spelling of 71974673 in words is "seventy-one million, nine hundred seventy-four thousand, six hundred seventy-three".