672595650 has 120 divisors (see below), whose sum is σ = 1978952580. Its totient is φ = 168791040.

The previous prime is 672595621. The next prime is 672595661. The reversal of 672595650 is 56595276.

672595650 is a `hidden beast` number, since 6 + 7 + 2 + 595 + 6 + 50 = 666.

672595650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 286591041 + 386004609 = 16929^2 + 19647^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 672595596 and 672595605.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 63966 + ... + 73734.

Almost surely, 2^672595650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672595650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989476290).

672595650 is an abundant number, since it is smaller than the sum of its proper divisors (1306356930).

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

672595650 is a wasteful number, since it uses less digits than its factorization.

672595650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810 (or 9796 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 672595650 is about 25934.4490976770. The cubic root of 672595650 is about 876.1625472431.

The spelling of 672595650 in words is "six hundred seventy-two million, five hundred ninety-five thousand, six hundred fifty".