673541865 has 16 divisors (see below), whose sum is σ = 1197408000. Its totient is φ = 359222256.

The previous prime is 673541851. The next prime is 673541879. The reversal of 673541865 is 568145376.

673541865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (673541851) and next prime (673541879).

It is not a de Polignac number, because 673541865 - 2¹³ = 673533673 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 673541865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2494465 + ... + 2494734.

It is an arithmetic number, because the mean of its divisors is an integer number (74838000).

Almost surely, 2^673541865 is an apocalyptic number.

It is an amenable number.

673541865 is a deficient number, since it is larger than the sum of its proper divisors (523866135).

673541865 is a wasteful number, since it uses less digits than its factorization.

673541865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989213 (or 4989207 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 673541865 is about 25952.6851211970. The cubic root of 673541865 is about 876.5732197780.

The spelling of 673541865 in words is "six hundred seventy-three million, five hundred forty-one thousand, eight hundred sixty-five".