72266999 has 8 divisors (see below), whose sum is σ = 82778400. Its totient is φ = 61802496.

The previous prime is 72266993. The next prime is 72267023. The reversal of 72266999 is 99966227.

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

It is not a de Polignac number, because 72266999 - 2⁸ = 72266743 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 (72266993) 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, 8354 + ... + 14639.

It is an arithmetic number, because the mean of its divisors is an integer number (10347300).

Almost surely, 2^72266999 is an apocalyptic number.

72266999 is a deficient number, since it is larger than the sum of its proper divisors (10511401).

72266999 is a wasteful number, since it uses less digits than its factorization.

72266999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23449.

The product of its digits is 734832, while the sum is 50.

The square root of 72266999 is about 8500.9998823668. Note that the first 3 decimals coincide. The cubic root of 72266999 is about 416.5303712792.

The spelling of 72266999 in words is "seventy-two million, two hundred sixty-six thousand, nine hundred ninety-nine".