74521718 has 8 divisors (see below), whose sum is σ = 111820800. Its totient is φ = 37248120.

The previous prime is 74521703. The next prime is 74521721. The reversal of 74521718 is 81712547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5003 + ... + 13193.

It is an arithmetic number, because the mean of its divisors is an integer number (13977600).

Almost surely, 2^74521718 is an apocalyptic number.

74521718 is a deficient number, since it is larger than the sum of its proper divisors (37299082).

74521718 is a wasteful number, since it uses less digits than its factorization.

74521718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12742.

The product of its digits is 15680, while the sum is 35.

The square root of 74521718 is about 8632.5962491014. The cubic root of 74521718 is about 420.8179788361.

The spelling of 74521718 in words is "seventy-four million, five hundred twenty-one thousand, seven hundred eighteen".