672787 has 2 divisors, whose sum is σ = 672788. Its totient is φ = 672786.

The previous prime is 672781. The next prime is 672799. The reversal of 672787 is 787276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672787 - 2³ = 672779 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (672781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336393 + 336394.

It is an arithmetic number, because the mean of its divisors is an integer number (336394).

2⁶⁷²⁷⁸⁷ is an apocalyptic number.

672787 is a deficient number, since it is larger than the sum of its proper divisors (1).

672787 is an equidigital number, since it uses as much as digits as its factorization.

672787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 37.

The square root of 672787 is about 820.2359416656. The cubic root of 672787 is about 87.6245627276.

The spelling of 672787 in words is "six hundred seventy-two thousand, seven hundred eighty-seven".