672778 has 8 divisors (see below), whose sum is σ = 1032768. Its totient is φ = 328524.

The previous prime is 672767. The next prime is 672779. The reversal of 672778 is 877276.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3826 + ... + 3997.

It is an arithmetic number, because the mean of its divisors is an integer number (129096).

2⁶⁷²⁷⁷⁸ is an apocalyptic number.

672778 is a deficient number, since it is larger than the sum of its proper divisors (359990).

672778 is a wasteful number, since it uses less digits than its factorization.

672778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868.

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

The square root of 672778 is about 820.2304554209. The cubic root of 672778 is about 87.6241720024.

The spelling of 672778 in words is "six hundred seventy-two thousand, seven hundred seventy-eight".