74081563 has 4 divisors (see below), whose sum is σ = 78439320. Its totient is φ = 69723808.

The previous prime is 74081503. The next prime is 74081569. The reversal of 74081563 is 36518047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36518047 = 29 ⋅1259243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74081563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74081569) 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 in 3 ways as a sum of consecutive naturals, for example, 2178853 + ... + 2178886.

It is an arithmetic number, because the mean of its divisors is an integer number (19609830).

Almost surely, 2^74081563 is an apocalyptic number.

74081563 is a deficient number, since it is larger than the sum of its proper divisors (4357757).

74081563 is a wasteful number, since it uses less digits than its factorization.

74081563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357756.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 74081563 is about 8607.0647145238. The cubic root of 74081563 is about 419.9878360045.

The spelling of 74081563 in words is "seventy-four million, eighty-one thousand, five hundred sixty-three".