672785 has 8 divisors (see below), whose sum is σ = 812160. Its totient is φ = 535024.

The previous prime is 672781. The next prime is 672787. The reversal of 672785 is 587276.

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

It is a cyclic number.

It is not a de Polignac number, because 672785 - 2² = 672781 is a prime.

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

It is a plaindrome in base 9.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672785.

It is not an unprimeable number, because it can be changed into a prime (672781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (101520).

2⁶⁷²⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

672785 is a deficient number, since it is larger than the sum of its proper divisors (139375).

672785 is a wasteful number, since it uses less digits than its factorization.

672785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its digits is 23520, while the sum is 35.

The square root of 672785 is about 820.2347225033. The cubic root of 672785 is about 87.6244759001.

The spelling of 672785 in words is "six hundred seventy-two thousand, seven hundred eighty-five".