74556473 has 2 divisors, whose sum is σ = 74556474. Its totient is φ = 74556472.

The previous prime is 74556467. The next prime is 74556481. The reversal of 74556473 is 37465547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 30824704 = 6613^2 + 5552^2 .

It is a cyclic number.

It is not a de Polignac number, because 74556473 - 2²⁰ = 73507897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74556473.

It is not a weakly prime, because it can be changed into another prime (74556463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37278236 + 37278237.

It is an arithmetic number, because the mean of its divisors is an integer number (37278237).

Almost surely, 2^74556473 is an apocalyptic number.

It is an amenable number.

74556473 is a deficient number, since it is larger than the sum of its proper divisors (1).

74556473 is an equidigital number, since it uses as much as digits as its factorization.

74556473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 41.

The square root of 74556473 is about 8634.6090241539. The cubic root of 74556473 is about 420.8833882057.

The spelling of 74556473 in words is "seventy-four million, five hundred fifty-six thousand, four hundred seventy-three".