72636043 has 2 divisors, whose sum is σ = 72636044. Its totient is φ = 72636042.

The previous prime is 72636041. The next prime is 72636049. The reversal of 72636043 is 34063627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72636043 - 2¹ = 72636041 is a prime.

Together with 72636041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 72635996 and 72636014.

It is not a weakly prime, because it can be changed into another prime (72636041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36318021 + 36318022.

It is an arithmetic number, because the mean of its divisors is an integer number (36318022).

Almost surely, 2^72636043 is an apocalyptic number.

72636043 is a deficient number, since it is larger than the sum of its proper divisors (1).

72636043 is an equidigital number, since it uses as much as digits as its factorization.

72636043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 72636043 is about 8522.6781588888. The cubic root of 72636043 is about 417.2381960294.

The spelling of 72636043 in words is "seventy-two million, six hundred thirty-six thousand, forty-three".