74240064 has 70 divisors (see below), whose sum is σ = 220086174. Its totient is φ = 24744960.

The previous prime is 74240057. The next prime is 74240077. The reversal of 74240064 is 46004247.

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 33177600 = 6408^2 + 5760^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1977 + ... + 12344.

Almost surely, 2^74240064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74240064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110043087).

74240064 is an abundant number, since it is smaller than the sum of its proper divisors (145846110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74240064 is a wasteful number, since it uses less digits than its factorization.

74240064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345 (or 14326 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 74240064 is about 8616.2674053212. The cubic root of 74240064 is about 420.2871505715.

The spelling of 74240064 in words is "seventy-four million, two hundred forty thousand, sixty-four".