672771 has 32 divisors (see below), whose sum is σ = 1094400. Its totient is φ = 362880.

The previous prime is 672767. The next prime is 672779. The reversal of 672771 is 177276.

It is a happy number.

It is not a de Polignac number, because 672771 - 2² = 672767 is a prime.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18165 + ... + 18201.

It is an arithmetic number, because the mean of its divisors is an integer number (34200).

2⁶⁷²⁷⁷¹ is an apocalyptic number.

672771 is a deficient number, since it is larger than the sum of its proper divisors (421629).

672771 is a wasteful number, since it uses less digits than its factorization.

672771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99.

The product of its digits is 4116, while the sum is 30.

The square root of 672771 is about 820.2261883164. The cubic root of 672771 is about 87.6238681026.

The spelling of 672771 in words is "six hundred seventy-two thousand, seven hundred seventy-one".