74148815 has 16 divisors (see below), whose sum is σ = 101461248. Its totient is φ = 51534336.

The previous prime is 74148799. The next prime is 74148817. The reversal of 74148815 is 51884147.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74148815 - 2⁴ = 74148799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74148817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32447 + ... + 34656.

It is an arithmetic number, because the mean of its divisors is an integer number (6341328).

Almost surely, 2^74148815 is an apocalyptic number.

74148815 is a deficient number, since it is larger than the sum of its proper divisors (27312433).

74148815 is a wasteful number, since it uses less digits than its factorization.

74148815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67138.

The product of its digits is 35840, while the sum is 38.

The square root of 74148815 is about 8610.9706189256. The cubic root of 74148815 is about 420.1148873160.

The spelling of 74148815 in words is "seventy-four million, one hundred forty-eight thousand, eight hundred fifteen".