74456865 has 96 divisors (see below), whose sum is σ = 158146560. Its totient is φ = 31667328.

The previous prime is 74456849. The next prime is 74456869. The reversal of 74456865 is 56865447.

It is not a de Polignac number, because 74456865 - 2⁴ = 74456849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (806400) is a multiple of the sum of its prime divisors (320).

It is a self number, because there is not a number n which added to its sum of digits gives 74456865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74456869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 311416 + ... + 311654.

It is an arithmetic number, because the mean of its divisors is an integer number (1647360).

Almost surely, 2^74456865 is an apocalyptic number.

It is an amenable number.

74456865 is an abundant number, since it is smaller than the sum of its proper divisors (83689695).

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

74456865 is a wasteful number, since it uses less digits than its factorization.

74456865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 320 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 74456865 is about 8628.8391455630. The cubic root of 74456865 is about 420.6958702314.

The spelling of 74456865 in words is "seventy-four million, four hundred fifty-six thousand, eight hundred sixty-five".