74385653 has 4 divisors (see below), whose sum is σ = 74415840. Its totient is φ = 74355468.

The previous prime is 74385629. The next prime is 74385671. The reversal of 74385653 is 35658347.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35658347 = 53 ⋅672799.

It is a cyclic number.

It is not a de Polignac number, because 74385653 - 2¹² = 74381557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74385653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74385683) 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, 11033 + ... + 16446.

It is an arithmetic number, because the mean of its divisors is an integer number (18603960).

Almost surely, 2^74385653 is an apocalyptic number.

It is an amenable number.

74385653 is a deficient number, since it is larger than the sum of its proper divisors (30187).

74385653 is a wasteful number, since it uses less digits than its factorization.

74385653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30186.

The product of its digits is 302400, while the sum is 41.

The square root of 74385653 is about 8624.7117632997. The cubic root of 74385653 is about 420.5617068677.

The spelling of 74385653 in words is "seventy-four million, three hundred eighty-five thousand, six hundred fifty-three".