74320355 has 4 divisors (see below), whose sum is σ = 89184432. Its totient is φ = 59456280.

The previous prime is 74320349. The next prime is 74320357. The reversal of 74320355 is 55302347.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 74320355 - 2¹⁸ = 74058211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74320357) 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 3 ways as a sum of consecutive naturals, for example, 7432031 + ... + 7432040.

It is an arithmetic number, because the mean of its divisors is an integer number (22296108).

Almost surely, 2^74320355 is an apocalyptic number.

74320355 is a deficient number, since it is larger than the sum of its proper divisors (14864077).

74320355 is a wasteful number, since it uses less digits than its factorization.

74320355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864076.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 74320355 is about 8620.9254143624. The cubic root of 74320355 is about 420.4386102007.

The spelling of 74320355 in words is "seventy-four million, three hundred twenty thousand, three hundred fifty-five".