74017945 has 16 divisors (see below), whose sum is σ = 92955600. Its totient is φ = 56519424.

The previous prime is 74017943. The next prime is 74017961. The reversal of 74017945 is 54971047.

74017945 = 6083² + 6084².

It can be written as a sum of positive squares in 8 ways, for example, as 14295961 + 59721984 = 3781^2 + 7728^2 .

It is not a de Polignac number, because 74017945 - 2¹ = 74017943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (74017943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6031 + ... + 13579.

It is an arithmetic number, because the mean of its divisors is an integer number (5809725).

Almost surely, 2^74017945 is an apocalyptic number.

74017945 is the 6084-th centered square number.

It is an amenable number.

74017945 is a deficient number, since it is larger than the sum of its proper divisors (18937655).

74017945 is a wasteful number, since it uses less digits than its factorization.

74017945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 74017945 is about 8603.3682357551. The cubic root of 74017945 is about 419.8675791910.

The spelling of 74017945 in words is "seventy-four million, seventeen thousand, nine hundred forty-five".