74943650 has 24 divisors (see below), whose sum is σ = 147596580. Its totient is φ = 28213760.

The previous prime is 74943641. The next prime is 74943653. The reversal of 74943650 is 5634947.

It is a Cunningham number, because it is equal to 8657²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 38353249 + 36590401 = 6193^2 + 6049^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74943653) 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 11 ways as a sum of consecutive naturals, for example, 43235 + ... + 44934.

Almost surely, 2^74943650 is an apocalyptic number.

74943650 is a deficient number, since it is larger than the sum of its proper divisors (72652930).

74943650 is a wasteful number, since it uses less digits than its factorization.

74943650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88198 (or 88193 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 74943650 is about 8657.0000577567. Note that the first 4 decimals coincide. The cubic root of 74943650 is about 421.6106896761.

The spelling of 74943650 in words is "seventy-four million, nine hundred forty-three thousand, six hundred fifty".