74545810 has 16 divisors (see below), whose sum is σ = 135164376. Its totient is φ = 29600128.

The previous prime is 74545781. The next prime is 74545817. The reversal of 74545810 is 1854547.

It can be written as a sum of positive squares in 4 ways, for example, as 63728289 + 10817521 = 7983^2 + 3289^2 .

It is a super-2 number, since 2×74545810² = 11114155577112200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74545817) 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 7 ways as a sum of consecutive naturals, for example, 25837 + ... + 28576.

Almost surely, 2^74545810 is an apocalyptic number.

74545810 is a deficient number, since it is larger than the sum of its proper divisors (60618566).

74545810 is a wasteful number, since it uses less digits than its factorization.

74545810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54557.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 74545810 is about 8633.9915450503. The cubic root of 74545810 is about 420.8633224607.

The spelling of 74545810 in words is "seventy-four million, five hundred forty-five thousand, eight hundred ten".