74987894 has 4 divisors (see below), whose sum is σ = 112481844. Its totient is φ = 37493946.

The previous prime is 74987839. The next prime is 74987897. The reversal of 74987894 is 49878947.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74987897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18746972 + ... + 18746975.

It is an arithmetic number, because the mean of its divisors is an integer number (28120461).

Almost surely, 2^74987894 is an apocalyptic number.

74987894 is a deficient number, since it is larger than the sum of its proper divisors (37493950).

74987894 is a wasteful number, since it uses less digits than its factorization.

74987894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37493949.

The product of its digits is 4064256, while the sum is 56.

The square root of 74987894 is about 8659.5550694017. Note that the first 3 decimals coincide. The cubic root of 74987894 is about 421.6936412169.

The spelling of 74987894 in words is "seventy-four million, nine hundred eighty-seven thousand, eight hundred ninety-four".