74709136 has 10 divisors (see below), whose sum is σ = 144748982. Its totient is φ = 37354560.

The previous prime is 74709127. The next prime is 74709137. The reversal of 74709136 is 63190747.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 59536 = 8640^2 + 244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74709095 and 74709104.

It is not an unprimeable number, because it can be changed into a prime (74709137) 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 as a sum of consecutive naturals, namely, 2334645 + ... + 2334676.

Almost surely, 2^74709136 is an apocalyptic number.

It is an amenable number.

74709136 is a deficient number, since it is larger than the sum of its proper divisors (70039846).

74709136 is a wasteful number, since it uses less digits than its factorization.

74709136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669329 (or 4669323 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 74709136 is about 8643.4446836895. Note that the first 3 decimals coincide. The cubic root of 74709136 is about 421.1704614920.

The spelling of 74709136 in words is "seventy-four million, seven hundred nine thousand, one hundred thirty-six".