72512863 has 2 divisors, whose sum is σ = 72512864. Its totient is φ = 72512862.

The previous prime is 72512861. The next prime is 72512917. The reversal of 72512863 is 36821527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72512863 - 2¹ = 72512861 is a prime.

Together with 72512861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72512861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36256431 + 36256432.

It is an arithmetic number, because the mean of its divisors is an integer number (36256432).

Almost surely, 2^72512863 is an apocalyptic number.

72512863 is a deficient number, since it is larger than the sum of its proper divisors (1).

72512863 is an equidigital number, since it uses as much as digits as its factorization.

72512863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 72512863 is about 8515.4484908312. The cubic root of 72512863 is about 417.0022044598.

The spelling of 72512863 in words is "seventy-two million, five hundred twelve thousand, eight hundred sixty-three".