72191627 has 2 divisors, whose sum is σ = 72191628. Its totient is φ = 72191626.

The previous prime is 72191597. The next prime is 72191663. The reversal of 72191627 is 72619127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72191627 - 2¹⁰ = 72190603 is a prime.

It is not a weakly prime, because it can be changed into another prime (72191927) 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, 36095813 + 36095814.

It is an arithmetic number, because the mean of its divisors is an integer number (36095814).

Almost surely, 2^72191627 is an apocalyptic number.

72191627 is a deficient number, since it is larger than the sum of its proper divisors (1).

72191627 is an equidigital number, since it uses as much as digits as its factorization.

72191627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 72191627 is about 8496.5656002882. The cubic root of 72191627 is about 416.3855119453.

The spelling of 72191627 in words is "seventy-two million, one hundred ninety-one thousand, six hundred twenty-seven".