72966291 has 8 divisors (see below), whose sum is σ = 100643280. Its totient is φ = 46966752.

The previous prime is 72966287. The next prime is 72966301. The reversal of 72966291 is 19266927.

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

It is not a de Polignac number, because 72966291 - 2² = 72966287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72966241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419260 + ... + 419433.

It is an arithmetic number, because the mean of its divisors is an integer number (12580410).

Almost surely, 2^72966291 is an apocalyptic number.

72966291 is a deficient number, since it is larger than the sum of its proper divisors (27676989).

72966291 is a wasteful number, since it uses less digits than its factorization.

72966291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838725.

The product of its digits is 81648, while the sum is 42.

The square root of 72966291 is about 8542.0308475210. The cubic root of 72966291 is about 417.8695803526.

The spelling of 72966291 in words is "seventy-two million, nine hundred sixty-six thousand, two hundred ninety-one".