72773697 has 8 divisors (see below), whose sum is σ = 97213120. Its totient is φ = 48425040.

The previous prime is 72773683. The next prime is 72773713. The reversal of 72773697 is 79637727.

It is a happy number.

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

It is not a de Polignac number, because 72773697 - 2²⁴ = 55996481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72773677) 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, 20797 + ... + 24042.

It is an arithmetic number, because the mean of its divisors is an integer number (12151640).

Almost surely, 2^72773697 is an apocalyptic number.

It is an amenable number.

72773697 is a deficient number, since it is larger than the sum of its proper divisors (24439423).

72773697 is a wasteful number, since it uses less digits than its factorization.

72773697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45383.

The product of its digits is 777924, while the sum is 48.

The square root of 72773697 is about 8530.7500842540. The cubic root of 72773697 is about 417.5016018201.

The spelling of 72773697 in words is "seventy-two million, seven hundred seventy-three thousand, six hundred ninety-seven".