72899803 has 4 divisors (see below), whose sum is σ = 73545048. Its totient is φ = 72254560.

The previous prime is 72899759. The next prime is 72899851. The reversal of 72899803 is 30899827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30899827 = 7 ⋅4414261.

It is a cyclic number.

It is not a de Polignac number, because 72899803 - 2⁹ = 72899291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72899873) 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, 322453 + ... + 322678.

It is an arithmetic number, because the mean of its divisors is an integer number (18386262).

Almost surely, 2^72899803 is an apocalyptic number.

72899803 is a deficient number, since it is larger than the sum of its proper divisors (645245).

72899803 is a wasteful number, since it uses less digits than its factorization.

72899803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645244.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 72899803 is about 8538.1381459894. The cubic root of 72899803 is about 417.7426187314.

The spelling of 72899803 in words is "seventy-two million, eight hundred ninety-nine thousand, eight hundred three".