673528491 has 24 divisors (see below), whose sum is σ = 1035899280. Its totient is φ = 420228096.

The previous prime is 673528487. The next prime is 673528519. The reversal of 673528491 is 194825376.

It is not a de Polignac number, because 673528491 - 2² = 673528487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673528091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15091 + ... + 39683.

It is an arithmetic number, because the mean of its divisors is an integer number (43162470).

Almost surely, 2^673528491 is an apocalyptic number.

673528491 is a deficient number, since it is larger than the sum of its proper divisors (362370789).

673528491 is a wasteful number, since it uses less digits than its factorization.

673528491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24795 (or 24792 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 673528491 is about 25952.4274587176. The cubic root of 673528491 is about 876.5674179274.

The spelling of 673528491 in words is "six hundred seventy-three million, five hundred twenty-eight thousand, four hundred ninety-one".