72086773 has 4 divisors (see below), whose sum is σ = 78640128. Its totient is φ = 65533420.

The previous prime is 72086771. The next prime is 72086809. The reversal of 72086773 is 37768027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37768027 = 11 ⋅3433457.

It is a cyclic number.

It is not a de Polignac number, because 72086773 - 2¹ = 72086771 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 (72086771) 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, 3276661 + ... + 3276682.

It is an arithmetic number, because the mean of its divisors is an integer number (19660032).

Almost surely, 2^72086773 is an apocalyptic number.

It is an amenable number.

72086773 is a deficient number, since it is larger than the sum of its proper divisors (6553355).

72086773 is a wasteful number, since it uses less digits than its factorization.

72086773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553354.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 72086773 is about 8490.3929826599. The cubic root of 72086773 is about 416.1838226218.

The spelling of 72086773 in words is "seventy-two million, eighty-six thousand, seven hundred seventy-three".