672815512746 has 48 divisors (see below), whose sum is σ = 1580439205800. Its totient is φ = 205630750080.

The previous prime is 672815512723. The next prime is 672815512771. The reversal of 672815512746 is 647215518276.

It is a happy number.

672815512746 is a `hidden beast` number, since 6 + 7 + 2 + 81 + 5 + 512 + 7 + 46 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 504399664521 + 168415848225 = 710211^2 + 410385^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 672815512692 and 672815512701.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9613725 + ... + 9683456.

Almost surely, 2^672815512746 is an apocalyptic number.

672815512746 is an abundant number, since it is smaller than the sum of its proper divisors (907623693054).

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

672815512746 is a wasteful number, since it uses less digits than its factorization.

672815512746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19297351 (or 19297348 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 672815512746 in words is "six hundred seventy-two billion, eight hundred fifteen million, five hundred twelve thousand, seven hundred forty-six".