72063331 has 2 divisors, whose sum is σ = 72063332. Its totient is φ = 72063330.

The previous prime is 72063319. The next prime is 72063349. The reversal of 72063331 is 13336027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72063331 - 2⁷ = 72063203 is a prime.

It is a super-2 number, since 2×72063331² = 10386247349631122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72063296 and 72063305.

It is not a weakly prime, because it can be changed into another prime (72063311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36031665 + 36031666.

It is an arithmetic number, because the mean of its divisors is an integer number (36031666).

Almost surely, 2^72063331 is an apocalyptic number.

72063331 is a deficient number, since it is larger than the sum of its proper divisors (1).

72063331 is an equidigital number, since it uses as much as digits as its factorization.

72063331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 72063331 is about 8489.0123689390. The cubic root of 72063331 is about 416.1387045949.

Adding to 72063331 its reverse (13336027), we get a palindrome (85399358).

The spelling of 72063331 in words is "seventy-two million, sixty-three thousand, three hundred thirty-one".