72672767 has 4 divisors (see below), whose sum is σ = 73074456. Its totient is φ = 72271080.

The previous prime is 72672751. The next prime is 72672781. The reversal of 72672767 is 76727627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76727627 = 157 ⋅488711.

It is a cyclic number.

It is not a de Polignac number, because 72672767 - 2⁴ = 72672751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72675767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200573 + ... + 200934.

It is an arithmetic number, because the mean of its divisors is an integer number (18268614).

Almost surely, 2^72672767 is an apocalyptic number.

72672767 is a deficient number, since it is larger than the sum of its proper divisors (401689).

72672767 is a wasteful number, since it uses less digits than its factorization.

72672767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401688.

The product of its digits is 345744, while the sum is 44.

The square root of 72672767 is about 8524.8323737186. The cubic root of 72672767 is about 417.3085012263.

The spelling of 72672767 in words is "seventy-two million, six hundred seventy-two thousand, seven hundred sixty-seven".