74865563 has 2 divisors, whose sum is σ = 74865564. Its totient is φ = 74865562.

The previous prime is 74865547. The next prime is 74865587. The reversal of 74865563 is 36556847.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74865563 - 2⁴ = 74865547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74865503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37432781 + 37432782.

It is an arithmetic number, because the mean of its divisors is an integer number (37432782).

Almost surely, 2^74865563 is an apocalyptic number.

74865563 is a deficient number, since it is larger than the sum of its proper divisors (1).

74865563 is an equidigital number, since it uses as much as digits as its factorization.

74865563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The square root of 74865563 is about 8652.4888327001. The cubic root of 74865563 is about 421.4642073749.

The spelling of 74865563 in words is "seventy-four million, eight hundred sixty-five thousand, five hundred sixty-three".