74633645 has 8 divisors (see below), whose sum is σ = 90897504. Its totient is φ = 58815504.

The previous prime is 74633641. The next prime is 74633651. The reversal of 74633645 is 54633647.

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 74633645 - 2² = 74633641 is a prime.

It is a super-3 number, since 3×74633645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74633599 and 74633608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74633641) 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, 111059 + ... + 111728.

It is an arithmetic number, because the mean of its divisors is an integer number (11362188).

Almost surely, 2^74633645 is an apocalyptic number.

It is an amenable number.

74633645 is a deficient number, since it is larger than the sum of its proper divisors (16263859).

74633645 is a wasteful number, since it uses less digits than its factorization.

74633645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222859.

The product of its digits is 181440, while the sum is 38.

The square root of 74633645 is about 8639.0766288996. The cubic root of 74633645 is about 421.0285542852.

The spelling of 74633645 in words is "seventy-four million, six hundred thirty-three thousand, six hundred forty-five".