72871003 has 2 divisors, whose sum is σ = 72871004. Its totient is φ = 72871002.

The previous prime is 72870991. The next prime is 72871013. The reversal of 72871003 is 30017827.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72871003 is a prime.

It is not a weakly prime, because it can be changed into another prime (72871013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36435501 + 36435502.

It is an arithmetic number, because the mean of its divisors is an integer number (36435502).

Almost surely, 2^72871003 is an apocalyptic number.

72871003 is a deficient number, since it is larger than the sum of its proper divisors (1).

72871003 is an equidigital number, since it uses as much as digits as its factorization.

72871003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72871003 is about 8536.4514290190. The cubic root of 72871003 is about 417.6875999632.

The spelling of 72871003 in words is "seventy-two million, eight hundred seventy-one thousand, three".