672497639593 has 4 divisors (see below), whose sum is σ = 724228227268. Its totient is φ = 620767051920.

The previous prime is 672497639587. The next prime is 672497639617. The reversal of 672497639593 is 395936794276.

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 184339705104 + 488157934489 = 429348^2 + 698683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672497639593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672497639503) 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, 25865293818 + ... + 25865293843.

It is an arithmetic number, because the mean of its divisors is an integer number (181057056817).

Almost surely, 2^672497639593 is an apocalyptic number.

It is an amenable number.

672497639593 is a deficient number, since it is larger than the sum of its proper divisors (51730587675).

672497639593 is a wasteful number, since it uses less digits than its factorization.

672497639593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51730587674.

The product of its digits is 462944160, while the sum is 70.

The spelling of 672497639593 in words is "six hundred seventy-two billion, four hundred ninety-seven million, six hundred thirty-nine thousand, five hundred ninety-three".