74806245 has 12 divisors (see below), whose sum is σ = 129664236. Its totient is φ = 39896640.

The previous prime is 74806241. The next prime is 74806271. The reversal of 74806245 is 54260847.

It can be written as a sum of positive squares in 2 ways, for example, as 36650916 + 38155329 = 6054^2 + 6177^2 .

It is not a de Polignac number, because 74806245 - 2² = 74806241 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74806241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 831136 + ... + 831225.

It is an arithmetic number, because the mean of its divisors is an integer number (10805353).

Almost surely, 2^74806245 is an apocalyptic number.

It is an amenable number.

74806245 is a deficient number, since it is larger than the sum of its proper divisors (54857991).

74806245 is a wasteful number, since it uses less digits than its factorization.

74806245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662372 (or 1662369 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 74806245 is about 8649.0603535876. The cubic root of 74806245 is about 421.3528654860.

The spelling of 74806245 in words is "seventy-four million, eight hundred six thousand, two hundred forty-five".