74777474 has 4 divisors (see below), whose sum is σ = 112166214. Its totient is φ = 37388736.

The previous prime is 74777467. The next prime is 74777497. The reversal of 74777474 is 47477747.

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: 47477747 = 103 ⋅460949.

It can be written as a sum of positive squares in only one way, i.e., 58415449 + 16362025 = 7643^2 + 4045^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18694367 + ... + 18694370.

Almost surely, 2^74777474 is an apocalyptic number.

74777474 is a deficient number, since it is larger than the sum of its proper divisors (37388740).

74777474 is a wasteful number, since it uses less digits than its factorization.

74777474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37388739.

The product of its digits is 1075648, while the sum is 47.

The square root of 74777474 is about 8647.3969493715. The cubic root of 74777474 is about 421.2988401490.

The spelling of 74777474 in words is "seventy-four million, seven hundred seventy-seven thousand, four hundred seventy-four".