74809863 has 6 divisors (see below), whose sum is σ = 108058704. Its totient is φ = 49873236.

The previous prime is 74809849. The next prime is 74809883. The reversal of 74809863 is 36890847.

It is a happy number.

It is not a de Polignac number, because 74809863 - 2⁵ = 74809831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74809883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4156095 + ... + 4156112.

It is an arithmetic number, because the mean of its divisors is an integer number (18009784).

Almost surely, 2^74809863 is an apocalyptic number.

74809863 is a deficient number, since it is larger than the sum of its proper divisors (33248841).

74809863 is a wasteful number, since it uses less digits than its factorization.

74809863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312213 (or 8312210 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 74809863 is about 8649.2695067271. The cubic root of 74809863 is about 421.3596582794.

The spelling of 74809863 in words is "seventy-four million, eight hundred nine thousand, eight hundred sixty-three".