673367440 has 40 divisors (see below), whose sum is σ = 1607899320. Its totient is φ = 262066176.

The previous prime is 673367423. The next prime is 673367441. The reversal of 673367440 is 44763376.

It can be written as a sum of positive squares in 4 ways, for example, as 160073104 + 513294336 = 12652^2 + 22656^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 673367393 and 673367402.

It is not an unprimeable number, because it can be changed into a prime (673367441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110785 + ... + 116704.

It is an arithmetic number, because the mean of its divisors is an integer number (40197483).

Almost surely, 2^673367440 is an apocalyptic number.

It is an amenable number.

673367440 is an abundant number, since it is smaller than the sum of its proper divisors (934531880).

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

673367440 is a wasteful number, since it uses less digits than its factorization.

673367440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227539 (or 227533 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 40.

The square root of 673367440 is about 25949.3244613420. The cubic root of 673367440 is about 876.4975454499.

The spelling of 673367440 in words is "six hundred seventy-three million, three hundred sixty-seven thousand, four hundred forty".