74849145 has 64 divisors (see below), whose sum is σ = 144875520. Its totient is φ = 32272128.

The previous prime is 74849143. The next prime is 74849171. The reversal of 74849145 is 54194847.

It is not a de Polignac number, because 74849145 - 2¹ = 74849143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74849097 and 74849106.

It is not an unprimeable number, because it can be changed into a prime (74849143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142854 + ... + 143376.

It is an arithmetic number, because the mean of its divisors is an integer number (2263680).

Almost surely, 2^74849145 is an apocalyptic number.

It is an amenable number.

74849145 is a deficient number, since it is larger than the sum of its proper divisors (70026375).

74849145 is a wasteful number, since it uses less digits than its factorization.

74849145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its digits is 161280, while the sum is 42.

The square root of 74849145 is about 8651.5400363172. The cubic root of 74849145 is about 421.4333961227.

The spelling of 74849145 in words is "seventy-four million, eight hundred forty-nine thousand, one hundred forty-five".