74881565 has 32 divisors (see below), whose sum is σ = 104163840. Its totient is φ = 51105600.

The previous prime is 74881553. The next prime is 74881601. The reversal of 74881565 is 56518847.

It is a happy number.

It is not a de Polignac number, because 74881565 - 2¹⁴ = 74865181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136622 + ... + 137168.

It is an arithmetic number, because the mean of its divisors is an integer number (3255120).

Almost surely, 2^74881565 is an apocalyptic number.

It is an amenable number.

74881565 is a deficient number, since it is larger than the sum of its proper divisors (29282275).

74881565 is a wasteful number, since it uses less digits than its factorization.

74881565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

The product of its digits is 268800, while the sum is 44.

The square root of 74881565 is about 8653.4134883293. The cubic root of 74881565 is about 421.4942335958.

The spelling of 74881565 in words is "seventy-four million, eight hundred eighty-one thousand, five hundred sixty-five".