74631971 has 2 divisors, whose sum is σ = 74631972. Its totient is φ = 74631970.

The previous prime is 74631959. The next prime is 74631979. The reversal of 74631971 is 17913647.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74631971 - 2¹⁴ = 74615587 is a prime.

It is not a weakly prime, because it can be changed into another prime (74631979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37315985 + 37315986.

It is an arithmetic number, because the mean of its divisors is an integer number (37315986).

Almost surely, 2^74631971 is an apocalyptic number.

74631971 is a deficient number, since it is larger than the sum of its proper divisors (1).

74631971 is an equidigital number, since it uses as much as digits as its factorization.

74631971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 74631971 is about 8638.9797430021. The cubic root of 74631971 is about 421.0254064329.

The spelling of 74631971 in words is "seventy-four million, six hundred thirty-one thousand, nine hundred seventy-one".