72773671 has 4 divisors (see below), whose sum is σ = 73966744. Its totient is φ = 71580600.

The previous prime is 72773663. The next prime is 72773677. The reversal of 72773671 is 17637727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72773671 - 2³ = 72773663 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 (72773677) 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, 596445 + ... + 596566.

It is an arithmetic number, because the mean of its divisors is an integer number (18491686).

Almost surely, 2^72773671 is an apocalyptic number.

72773671 is a deficient number, since it is larger than the sum of its proper divisors (1193073).

72773671 is a wasteful number, since it uses less digits than its factorization.

72773671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193072.

The product of its digits is 86436, while the sum is 40.

The square root of 72773671 is about 8530.7485603551. The cubic root of 72773671 is about 417.5015520996.

The spelling of 72773671 in words is "seventy-two million, seven hundred seventy-three thousand, six hundred seventy-one".