673529490 has 24 divisors (see below), whose sum is σ = 1751176908. Its totient is φ = 179607840.

The previous prime is 673529453. The next prime is 673529531. The reversal of 673529490 is 94925376.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 650403009 + 23126481 = 25503^2 + 4809^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3741741 + ... + 3741920.

Almost surely, 2^673529490 is an apocalyptic number.

673529490 is an abundant number, since it is smaller than the sum of its proper divisors (1077647418).

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

673529490 is a wasteful number, since it uses less digits than its factorization.

673529490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483674 (or 7483671 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 673529490 is about 25952.4467054650. The cubic root of 673529490 is about 876.5678513119.

The spelling of 673529490 in words is "six hundred seventy-three million, five hundred twenty-nine thousand, four hundred ninety".