72912097 has 8 divisors (see below), whose sum is σ = 74382336. Its totient is φ = 71456112.

The previous prime is 72912083. The next prime is 72912109. The reversal of 72912097 is 79021927.

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

It is a cyclic number.

It is not a de Polignac number, because 72912097 - 2¹⁵ = 72879329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72912797) 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, 7083 + ... + 13999.

It is an arithmetic number, because the mean of its divisors is an integer number (9297792).

Almost surely, 2^72912097 is an apocalyptic number.

It is an amenable number.

72912097 is a deficient number, since it is larger than the sum of its proper divisors (1470239).

72912097 is a wasteful number, since it uses less digits than its factorization.

72912097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7127.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 72912097 is about 8538.8580618254. The cubic root of 72912097 is about 417.7661004550.

The spelling of 72912097 in words is "seventy-two million, nine hundred twelve thousand, ninety-seven".