74724445 has 16 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 57375808.

The previous prime is 74724443. The next prime is 74724467. The reversal of 74724445 is 54442747.

It is a cyclic number.

It is not a de Polignac number, because 74724445 - 2¹ = 74724443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74724443) 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 15 ways as a sum of consecutive naturals, for example, 24516 + ... + 27394.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^74724445 is an apocalyptic number.

It is an amenable number.

74724445 is a deficient number, since it is larger than the sum of its proper divisors (18587555).

74724445 is a wasteful number, since it uses less digits than its factorization.

74724445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092.

The product of its digits is 125440, while the sum is 37.

The square root of 74724445 is about 8644.3302227529. The cubic root of 74724445 is about 421.1992275331.

The spelling of 74724445 in words is "seventy-four million, seven hundred twenty-four thousand, four hundred forty-five".