74668478 has 4 divisors (see below), whose sum is σ = 112002720. Its totient is φ = 37334238.

The previous prime is 74668463. The next prime is 74668487. The reversal of 74668478 is 87486647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87486647 = 131 ⋅667837.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18667118 + ... + 18667121.

It is an arithmetic number, because the mean of its divisors is an integer number (28000680).

Almost surely, 2^74668478 is an apocalyptic number.

74668478 is a deficient number, since it is larger than the sum of its proper divisors (37334242).

74668478 is a wasteful number, since it uses less digits than its factorization.

74668478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37334241.

The product of its digits is 1806336, while the sum is 50.

The square root of 74668478 is about 8641.0924077920. The cubic root of 74668478 is about 421.0940448855.

The spelling of 74668478 in words is "seventy-four million, six hundred sixty-eight thousand, four hundred seventy-eight".