672737 has 4 divisors (see below), whose sum is σ = 724500. Its totient is φ = 620976.

The previous prime is 672703. The next prime is 672743. The reversal of 672737 is 737276.

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

It can be written as a sum of positive squares in 2 ways, for example, as 274576 + 398161 = 524^2 + 631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672737 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672737.

It is not an unprimeable number, because it can be changed into a prime (672757) 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, 25862 + ... + 25887.

It is an arithmetic number, because the mean of its divisors is an integer number (181125).

2⁶⁷²⁷³⁷ is an apocalyptic number.

It is an amenable number.

672737 is a deficient number, since it is larger than the sum of its proper divisors (51763).

672737 is a wasteful number, since it uses less digits than its factorization.

672737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51762.

The product of its digits is 12348, while the sum is 32.

The square root of 672737 is about 820.2054620642. The cubic root of 672737 is about 87.6223919878.

The spelling of 672737 in words is "six hundred seventy-two thousand, seven hundred thirty-seven".