74677645 has 8 divisors (see below), whose sum is σ = 102415104. Its totient is φ = 51207504.

The previous prime is 74677637. The next prime is 74677649. The reversal of 74677645 is 54677647.

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 74677645 - 2³ = 74677637 is a prime.

It is a super-3 number, since 3×74677645³ (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 = 74677595 and 74677604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74677649) 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, 1066789 + ... + 1066858.

It is an arithmetic number, because the mean of its divisors is an integer number (12801888).

Almost surely, 2^74677645 is an apocalyptic number.

It is an amenable number.

74677645 is a deficient number, since it is larger than the sum of its proper divisors (27737459).

74677645 is a wasteful number, since it uses less digits than its factorization.

74677645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133659.

The product of its digits is 987840, while the sum is 46.

The square root of 74677645 is about 8641.6228221324. The cubic root of 74677645 is about 421.1112766601. Note that the first 3 decimals are identical.

The spelling of 74677645 in words is "seventy-four million, six hundred seventy-seven thousand, six hundred forty-five".