74814021 has 6 divisors (see below), whose sum is σ = 108064710. Its totient is φ = 49876008.

The previous prime is 74814017. The next prime is 74814029. The reversal of 74814021 is 12041847.

It can be written as a sum of positive squares in only one way, i.e., 55577025 + 19236996 = 7455^2 + 4386^2 .

It is not a de Polignac number, because 74814021 - 2² = 74814017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74814029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4156326 + ... + 4156343.

It is an arithmetic number, because the mean of its divisors is an integer number (18010785).

Almost surely, 2^74814021 is an apocalyptic number.

It is an amenable number.

74814021 is a deficient number, since it is larger than the sum of its proper divisors (33250689).

74814021 is a wasteful number, since it uses less digits than its factorization.

74814021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312675 (or 8312672 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 74814021 is about 8649.5098705071. The cubic root of 74814021 is about 421.3674646520.

Adding to 74814021 its reverse (12041847), we get a palindrome (86855868).

The spelling of 74814021 in words is "seventy-four million, eight hundred fourteen thousand, twenty-one".