673581650 has 96 divisors (see below), whose sum is σ = 1536330240. Its totient is φ = 214456320.

The previous prime is 673581607. The next prime is 673581659. The reversal of 673581650 is 56185376.

It is a junction number, because it is equal to n+sod(n) for n = 673581598 and 673581607.

It is not an unprimeable number, because it can be changed into a prime (673581659) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469334 + ... + 470766.

It is an arithmetic number, because the mean of its divisors is an integer number (16003440).

Almost surely, 2^673581650 is an apocalyptic number.

673581650 is an abundant number, since it is smaller than the sum of its proper divisors (862748590).

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

673581650 is a wasteful number, since it uses less digits than its factorization.

673581650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 673581650 is about 25953.4516008950. The cubic root of 673581650 is about 876.5904786799.

The spelling of 673581650 in words is "six hundred seventy-three million, five hundred eighty-one thousand, six hundred fifty".