74724705 has 24 divisors (see below), whose sum is σ = 141298560. Its totient is φ = 36229920.

The previous prime is 74724691. The next prime is 74724743. The reversal of 74724705 is 50742747.

It is a happy number.

It is not a de Polignac number, because 74724705 - 2⁷ = 74724577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74724705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74985 + ... + 75974.

It is an arithmetic number, because the mean of its divisors is an integer number (5887440).

Almost surely, 2^74724705 is an apocalyptic number.

It is an amenable number.

74724705 is a deficient number, since it is larger than the sum of its proper divisors (66573855).

74724705 is a wasteful number, since it uses less digits than its factorization.

74724705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150981 (or 150978 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 74724705 is about 8644.3452614990. The cubic root of 74724705 is about 421.1997160465.

It can be divided in two parts, 747 and 24705, that added together give a palindrome (25452).

The spelling of 74724705 in words is "seventy-four million, seven hundred twenty-four thousand, seven hundred five".