673480345 has 4 divisors (see below), whose sum is σ = 808176420. Its totient is φ = 538784272.

The previous prime is 673480337. The next prime is 673480351. The reversal of 673480345 is 543084376.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 319551376 + 353928969 = 17876^2 + 18813^2 .

It is a cyclic number.

It is not a de Polignac number, because 673480345 - 2³ = 673480337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673480298 and 673480307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67348030 + ... + 67348039.

It is an arithmetic number, because the mean of its divisors is an integer number (202044105).

Almost surely, 2^673480345 is an apocalyptic number.

It is an amenable number.

673480345 is a deficient number, since it is larger than the sum of its proper divisors (134696075).

673480345 is a wasteful number, since it uses less digits than its factorization.

673480345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134696074.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 673480345 is about 25951.4998603164. The cubic root of 673480345 is about 876.5465308028.

The spelling of 673480345 in words is "six hundred seventy-three million, four hundred eighty thousand, three hundred forty-five".