72995903 has 4 divisors (see below), whose sum is σ = 73013760. Its totient is φ = 72978048.

The previous prime is 72995899. The next prime is 72995911. The reversal of 72995903 is 30959927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30959927 = 4937 ⋅6271.

It is a cyclic number.

It is not a de Polignac number, because 72995903 - 2² = 72995899 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 (72995953) 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, 578 + ... + 12096.

It is an arithmetic number, because the mean of its divisors is an integer number (18253440).

Almost surely, 2^72995903 is an apocalyptic number.

72995903 is a deficient number, since it is larger than the sum of its proper divisors (17857).

72995903 is a wasteful number, since it uses less digits than its factorization.

72995903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 72995903 is about 8543.7639831634. The cubic root of 72995903 is about 417.9261008833.

The spelling of 72995903 in words is "seventy-two million, nine hundred ninety-five thousand, nine hundred three".