74274881 has 6 divisors (see below), whose sum is σ = 75516246. Its totient is φ = 73053600.

The previous prime is 74274877. The next prime is 74274883. The reversal of 74274881 is 18847247.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 160000 + 74114881 = 400^2 + 8609^2 .

It is not a de Polignac number, because 74274881 - 2² = 74274877 is a prime.

It is a super-2 number, since 2×74274881² = 11033515895128322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74274883) 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, 6260 + ... + 13701.

It is an arithmetic number, because the mean of its divisors is an integer number (12586041).

Almost surely, 2^74274881 is an apocalyptic number.

It is an amenable number.

74274881 is a deficient number, since it is larger than the sum of its proper divisors (1241365).

74274881 is an equidigital number, since it uses as much as digits as its factorization.

74274881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20083 (or 20022 counting only the distinct ones).

The product of its digits is 100352, while the sum is 41.

The square root of 74274881 is about 8618.2875909313. The cubic root of 74274881 is about 420.3528421940.

The spelling of 74274881 in words is "seventy-four million, two hundred seventy-four thousand, eight hundred eighty-one".