74994281 has 4 divisors (see below), whose sum is σ = 76589952. Its totient is φ = 73398612.

The previous prime is 74994277. The next prime is 74994299. The reversal of 74994281 is 18249947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74994281 - 2² = 74994277 is a prime.

It is a super-2 number, since 2×74994281² = 11248284365413922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74994581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797765 + ... + 797858.

It is an arithmetic number, because the mean of its divisors is an integer number (19147488).

Almost surely, 2^74994281 is an apocalyptic number.

It is an amenable number.

74994281 is a deficient number, since it is larger than the sum of its proper divisors (1595671).

74994281 is a wasteful number, since it uses less digits than its factorization.

74994281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595670.

The product of its digits is 145152, while the sum is 44.

The square root of 74994281 is about 8659.9238449307. The cubic root of 74994281 is about 421.7056132864.

The spelling of 74994281 in words is "seventy-four million, nine hundred ninety-four thousand, two hundred eighty-one".