74221603 has 4 divisors (see below), whose sum is σ = 76031928. Its totient is φ = 72411280.

The previous prime is 74221597. The next prime is 74221613. The reversal of 74221603 is 30612247.

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

It is a cyclic number.

It is not a de Polignac number, because 74221603 - 2²⁵ = 40667171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74221613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905101 + ... + 905182.

It is an arithmetic number, because the mean of its divisors is an integer number (19007982).

Almost surely, 2^74221603 is an apocalyptic number.

74221603 is a deficient number, since it is larger than the sum of its proper divisors (1810325).

74221603 is a wasteful number, since it uses less digits than its factorization.

74221603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810324.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 74221603 is about 8615.1960511645. The cubic root of 74221603 is about 420.2523106038.

It can be divided in two parts, 7422 and 1603, that added together give a square (9025 = 95²).

The spelling of 74221603 in words is "seventy-four million, two hundred twenty-one thousand, six hundred three".