72776373 has 8 divisors (see below), whose sum is σ = 99657888. Its totient is φ = 47206224.

The previous prime is 72776359. The next prime is 72776377. The reversal of 72776373 is 37367727.

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

It is not a de Polignac number, because 72776373 - 2¹⁰ = 72775349 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72776377) 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, 327711 + ... + 327932.

It is an arithmetic number, because the mean of its divisors is an integer number (12457236).

Almost surely, 2^72776373 is an apocalyptic number.

It is an amenable number.

72776373 is a deficient number, since it is larger than the sum of its proper divisors (26881515).

72776373 is a wasteful number, since it uses less digits than its factorization.

72776373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655683.

The product of its digits is 259308, while the sum is 42.

The square root of 72776373 is about 8530.9069271678. The cubic root of 72776373 is about 417.5067191480.

The spelling of 72776373 in words is "seventy-two million, seven hundred seventy-six thousand, three hundred seventy-three".