74702739 has 16 divisors (see below), whose sum is σ = 103162752. Its totient is φ = 48050688.

The previous prime is 74702717. The next prime is 74702759. The reversal of 74702739 is 93720747.

It is not a de Polignac number, because 74702739 - 2⁹ = 74702227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74702697 and 74702706.

It is not an unprimeable number, because it can be changed into a prime (74702759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7219 + ... + 14195.

It is an arithmetic number, because the mean of its divisors is an integer number (6447672).

Almost surely, 2^74702739 is an apocalyptic number.

74702739 is a deficient number, since it is larger than the sum of its proper divisors (28460013).

74702739 is a wasteful number, since it uses less digits than its factorization.

74702739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 74702739 is about 8643.0746265435. The cubic root of 74702739 is about 421.1584401851.

The spelling of 74702739 in words is "seventy-four million, seven hundred two thousand, seven hundred thirty-nine".