74223561 has 8 divisors (see below), whose sum is σ = 99195040. Its totient is φ = 49367232.

The previous prime is 74223559. The next prime is 74223619. The reversal of 74223561 is 16532247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74223561 - 2¹ = 74223559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74223511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27271 + ... + 29868.

It is an arithmetic number, because the mean of its divisors is an integer number (12399380).

Almost surely, 2^74223561 is an apocalyptic number.

It is an amenable number.

74223561 is a deficient number, since it is larger than the sum of its proper divisors (24971479).

74223561 is a wasteful number, since it uses less digits than its factorization.

74223561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57575.

The product of its digits is 10080, while the sum is 30.

The square root of 74223561 is about 8615.3096868308. The cubic root of 74223561 is about 420.2560060543.

The spelling of 74223561 in words is "seventy-four million, two hundred twenty-three thousand, five hundred sixty-one".