672811 has 2 divisors, whose sum is σ = 672812. Its totient is φ = 672810.

The previous prime is 672803. The next prime is 672817. The reversal of 672811 is 118276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672811 - 2³ = 672803 is a prime.

It is not a weakly prime, because it can be changed into another prime (672817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336405 + 336406.

It is an arithmetic number, because the mean of its divisors is an integer number (336406).

2⁶⁷²⁸¹¹ is an apocalyptic number.

672811 is a deficient number, since it is larger than the sum of its proper divisors (1).

672811 is an equidigital number, since it uses as much as digits as its factorization.

672811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 672811 is about 820.2505714719. The cubic root of 672811 is about 87.6256046446.

The spelling of 672811 in words is "six hundred seventy-two thousand, eight hundred eleven".