72903693 has 8 divisors (see below), whose sum is σ = 97904800. Its totient is φ = 48252528.

The previous prime is 72903689. The next prime is 72903697. The reversal of 72903693 is 39630927.

It is an interprime number because it is at equal distance from previous prime (72903689) and next prime (72903697).

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

It is not a de Polignac number, because 72903693 - 2² = 72903689 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 (72903697) 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, 86998 + ... + 87831.

It is an arithmetic number, because the mean of its divisors is an integer number (12238100).

Almost surely, 2^72903693 is an apocalyptic number.

It is an amenable number.

72903693 is a deficient number, since it is larger than the sum of its proper divisors (25001107).

72903693 is a wasteful number, since it uses less digits than its factorization.

72903693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174971.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 72903693 is about 8538.3659443713. The cubic root of 72903693 is about 417.7500489750.

The spelling of 72903693 in words is "seventy-two million, nine hundred three thousand, six hundred ninety-three".