72196387 has 2 divisors, whose sum is σ = 72196388. Its totient is φ = 72196386.

The previous prime is 72196357. The next prime is 72196417. The reversal of 72196387 is 78369127.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (72196357) and next prime (72196417).

It is an emirp because it is prime and its reverse (78369127) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72196387 is a prime.

It is not a weakly prime, because it can be changed into another prime (72196307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36098193 + 36098194.

It is an arithmetic number, because the mean of its divisors is an integer number (36098194).

Almost surely, 2^72196387 is an apocalyptic number.

72196387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72196387 is an equidigital number, since it uses as much as digits as its factorization.

72196387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 72196387 is about 8496.8457088498. The cubic root of 72196387 is about 416.3946632904.

The spelling of 72196387 in words is "seventy-two million, one hundred ninety-six thousand, three hundred eighty-seven".