74623378 has 4 divisors (see below), whose sum is σ = 111935070. Its totient is φ = 37311688.

The previous prime is 74623369. The next prime is 74623399. The reversal of 74623378 is 87332647.

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: 87332647 = 2281 ⋅38287.

It can be written as a sum of positive squares in only one way, i.e., 57259489 + 17363889 = 7567^2 + 4167^2 .

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 74623378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18655843 + ... + 18655846.

Almost surely, 2^74623378 is an apocalyptic number.

74623378 is a deficient number, since it is larger than the sum of its proper divisors (37311692).

74623378 is a wasteful number, since it uses less digits than its factorization.

74623378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37311691.

The product of its digits is 169344, while the sum is 40.

The square root of 74623378 is about 8638.4823898646. The cubic root of 74623378 is about 421.0092470929.

The spelling of 74623378 in words is "seventy-four million, six hundred twenty-three thousand, three hundred seventy-eight".