74461945 has 16 divisors (see below), whose sum is σ = 94017168. Its totient is φ = 56540160.

The previous prime is 74461943. The next prime is 74461949. The reversal of 74461945 is 54916447.

It can be written as a sum of positive squares in 8 ways, for example, as 3767481 + 70694464 = 1941^2 + 8408^2 .

It is not a de Polignac number, because 74461945 - 2¹ = 74461943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74461898 and 74461907.

It is not an unprimeable number, because it can be changed into a prime (74461943) 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, 2677 + ... + 12493.

It is an arithmetic number, because the mean of its divisors is an integer number (5876073).

Almost surely, 2^74461945 is an apocalyptic number.

It is an amenable number.

74461945 is a deficient number, since it is larger than the sum of its proper divisors (19555223).

74461945 is a wasteful number, since it uses less digits than its factorization.

74461945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9900.

The product of its digits is 120960, while the sum is 40.

The square root of 74461945 is about 8629.1335022701. The cubic root of 74461945 is about 420.7054376788.

The spelling of 74461945 in words is "seventy-four million, four hundred sixty-one thousand, nine hundred forty-five".