74770609 has 3 divisors (see below), whose sum is σ = 74779257. Its totient is φ = 74761962.

The previous prime is 74770589. The next prime is 74770649. The reversal of 74770609 is 90607747.

It is a happy number.

The square root of 74770609 is 8647.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90607747 = 557 ⋅162671.

It is not a de Polignac number, because 74770609 - 2¹³ = 74762417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74770649) 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 2 ways as a sum of consecutive naturals, for example, 4324 + ... + 12970.

It is an arithmetic number, because the mean of its divisors is an integer number (24926419).

Almost surely, 2^74770609 is an apocalyptic number.

74770609 is the 8647-th square number.

74770609 is the 4324-th centered octagonal number.

It is an amenable number.

74770609 is a deficient number, since it is larger than the sum of its proper divisors (8648).

74770609 is an frugal number, since it uses more digits than its factorization.

74770609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17294 (or 8647 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The cubic root of 74770609 is about 421.2859472064.

The spelling of 74770609 in words is "seventy-four million, seven hundred seventy thousand, six hundred nine".