74890855 has 16 divisors (see below), whose sum is σ = 98612640. Its totient is φ = 54258048.

The previous prime is 74890819. The next prime is 74890867. The reversal of 74890855 is 55809847.

It is not a de Polignac number, because 74890855 - 2²¹ = 72793703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7425 + ... + 14314.

It is an arithmetic number, because the mean of its divisors is an integer number (6163290).

Almost surely, 2^74890855 is an apocalyptic number.

74890855 is a deficient number, since it is larger than the sum of its proper divisors (23721785).

74890855 is a wasteful number, since it uses less digits than its factorization.

74890855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21810.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 74890855 is about 8653.9502540747. The cubic root of 74890855 is about 421.5116634287.

The spelling of 74890855 in words is "seventy-four million, eight hundred ninety thousand, eight hundred fifty-five".