74612147 has 2 divisors, whose sum is σ = 74612148. Its totient is φ = 74612146.

The previous prime is 74612081. The next prime is 74612149. The reversal of 74612147 is 74121647.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74612147 - 2²⁰ = 73563571 is a prime.

Together with 74612149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74612149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37306073 + 37306074.

It is an arithmetic number, because the mean of its divisors is an integer number (37306074).

Almost surely, 2^74612147 is an apocalyptic number.

74612147 is a deficient number, since it is larger than the sum of its proper divisors (1).

74612147 is an equidigital number, since it uses as much as digits as its factorization.

74612147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

The square root of 74612147 is about 8637.8323090924. The cubic root of 74612147 is about 420.9881250612.

The spelling of 74612147 in words is "seventy-four million, six hundred twelve thousand, one hundred forty-seven".