672647 has 4 divisors (see below), whose sum is σ = 683736. Its totient is φ = 661560.

The previous prime is 672643. The next prime is 672653. The reversal of 672647 is 746276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672647 - 2² = 672643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672647.

It is not an unprimeable number, because it can be changed into a prime (672641) 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, 5453 + ... + 5574.

It is an arithmetic number, because the mean of its divisors is an integer number (170934).

2⁶⁷²⁶⁴⁷ is an apocalyptic number.

672647 is a deficient number, since it is larger than the sum of its proper divisors (11089).

672647 is a wasteful number, since it uses less digits than its factorization.

672647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088.

The product of its digits is 14112, while the sum is 32.

The square root of 672647 is about 820.1505959274. The cubic root of 672647 is about 87.6184843850.

The spelling of 672647 in words is "six hundred seventy-two thousand, six hundred forty-seven".