74145493 has 8 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 73444704.

The previous prime is 74145473. The next prime is 74145499. The reversal of 74145493 is 39454147.

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

It is a cyclic number.

It is not a de Polignac number, because 74145493 - 2⁹ = 74144981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74145499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51246 + ... + 52672.

It is an arithmetic number, because the mean of its divisors is an integer number (9356256).

Almost surely, 2^74145493 is an apocalyptic number.

It is an amenable number.

74145493 is a deficient number, since it is larger than the sum of its proper divisors (704555).

74145493 is a wasteful number, since it uses less digits than its factorization.

74145493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883.

The product of its digits is 60480, while the sum is 37.

The square root of 74145493 is about 8610.7777232954. Note that the first 4 decimals coincide. The cubic root of 74145493 is about 420.1086132553.

The spelling of 74145493 in words is "seventy-four million, one hundred forty-five thousand, four hundred ninety-three".