72201863 has 2 divisors, whose sum is σ = 72201864. Its totient is φ = 72201862.

The previous prime is 72201841. The next prime is 72201869. The reversal of 72201863 is 36810227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72201863 - 2⁶ = 72201799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72201869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36100931 + 36100932.

It is an arithmetic number, because the mean of its divisors is an integer number (36100932).

Almost surely, 2^72201863 is an apocalyptic number.

72201863 is a deficient number, since it is larger than the sum of its proper divisors (1).

72201863 is an equidigital number, since it uses as much as digits as its factorization.

72201863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72201863 is about 8497.1679399668. The cubic root of 72201863 is about 416.4051906848.

It can be divided in two parts, 72 and 201863, that multiplied together give a triangular number (14534136 = T₅₃₉₁).

The spelling of 72201863 in words is "seventy-two million, two hundred one thousand, eight hundred sixty-three".