74590078 has 4 divisors (see below), whose sum is σ = 111885120. Its totient is φ = 37295038.

The previous prime is 74590073. The next prime is 74590093. The reversal of 74590078 is 87009547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87009547 = 1601 ⋅54347.

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 self number, because there is not a number n which added to its sum of digits gives 74590078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74590073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18647518 + ... + 18647521.

It is an arithmetic number, because the mean of its divisors is an integer number (27971280).

Almost surely, 2^74590078 is an apocalyptic number.

74590078 is a deficient number, since it is larger than the sum of its proper divisors (37295042).

74590078 is a wasteful number, since it uses less digits than its factorization.

74590078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37295041.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 74590078 is about 8636.5547529093. The cubic root of 74590078 is about 420.9466139334.

The spelling of 74590078 in words is "seventy-four million, five hundred ninety thousand, seventy-eight".