74709778 has 16 divisors (see below), whose sum is σ = 131656896. Its totient is φ = 31346640.

The previous prime is 74709731. The next prime is 74709779. The reversal of 74709778 is 87790747.

It is not an unprimeable number, because it can be changed into a prime (74709779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130326 + ... + 130897.

It is an arithmetic number, because the mean of its divisors is an integer number (8228556).

Almost surely, 2^74709778 is an apocalyptic number.

74709778 is a deficient number, since it is larger than the sum of its proper divisors (56947118).

74709778 is a wasteful number, since it uses less digits than its factorization.

74709778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261249.

The product of its (nonzero) digits is 691488, while the sum is 49.

The square root of 74709778 is about 8643.4818215809. The cubic root of 74709778 is about 421.1716679070.

The spelling of 74709778 in words is "seventy-four million, seven hundred nine thousand, seven hundred seventy-eight".