74968819 has 4 divisors (see below), whose sum is σ = 77387200. Its totient is φ = 72550440.

The previous prime is 74968781. The next prime is 74968841. The reversal of 74968819 is 91886947.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91886947 = 37 ⋅2483431.

It is a cyclic number.

It is not a de Polignac number, because 74968819 - 2¹⁷ = 74837747 is a prime.

It is a super-2 number, since 2×74968819² = 11240647644509522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74968879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209144 + ... + 1209205.

It is an arithmetic number, because the mean of its divisors is an integer number (19346800).

Almost surely, 2^74968819 is an apocalyptic number.

74968819 is a deficient number, since it is larger than the sum of its proper divisors (2418381).

74968819 is a wasteful number, since it uses less digits than its factorization.

74968819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418380.

The product of its digits is 870912, while the sum is 52.

The square root of 74968819 is about 8658.4536148206. The cubic root of 74968819 is about 421.6578821634.

The spelling of 74968819 in words is "seventy-four million, nine hundred sixty-eight thousand, eight hundred nineteen".