74216479 has 4 divisors (see below), whose sum is σ = 74873376. Its totient is φ = 73559584.

The previous prime is 74216473. The next prime is 74216491. The reversal of 74216479 is 97461247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97461247 = 13 ⋅7497019.

It is a cyclic number.

It is not a de Polignac number, because 74216479 - 2⁵ = 74216447 is a prime.

It is a super-3 number, since 3×74216479³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74216473) 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, 328279 + ... + 328504.

It is an arithmetic number, because the mean of its divisors is an integer number (18718344).

Almost surely, 2^74216479 is an apocalyptic number.

74216479 is a deficient number, since it is larger than the sum of its proper divisors (656897).

74216479 is a wasteful number, since it uses less digits than its factorization.

74216479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656896.

The product of its digits is 84672, while the sum is 40.

The square root of 74216479 is about 8614.8986645230. The cubic root of 74216479 is about 420.2426394645.

The spelling of 74216479 in words is "seventy-four million, two hundred sixteen thousand, four hundred seventy-nine".