672776 has 16 divisors (see below), whose sum is σ = 1358700. Its totient is φ = 310464.

The previous prime is 672767. The next prime is 672779. The reversal of 672776 is 677276.

It can be written as a sum of positive squares in 2 ways, for example, as 532900 + 139876 = 730^2 + 374^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (672779) by changing a digit.

672776 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131 + ... + 3338.

2⁶⁷²⁷⁷⁶ is an apocalyptic number.

It is an amenable number.

672776 is an abundant number, since it is smaller than the sum of its proper divisors (685924).

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

672776 is a wasteful number, since it uses less digits than its factorization.

672776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6488 (or 6484 counting only the distinct ones).

The product of its digits is 24696, while the sum is 35.

The square root of 672776 is about 820.2292362505. The cubic root of 672776 is about 87.6240851741.

The spelling of 672776 in words is "six hundred seventy-two thousand, seven hundred seventy-six".