72698071 has 2 divisors, whose sum is σ = 72698072. Its totient is φ = 72698070.

The previous prime is 72698053. The next prime is 72698113. The reversal of 72698071 is 17089627.

It is a weak prime.

It is an emirp because it is prime and its reverse (17089627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72698071 - 2¹³ = 72689879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72698011) 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, 36349035 + 36349036.

It is an arithmetic number, because the mean of its divisors is an integer number (36349036).

Almost surely, 2^72698071 is an apocalyptic number.

72698071 is a deficient number, since it is larger than the sum of its proper divisors (1).

72698071 is an equidigital number, since it uses as much as digits as its factorization.

72698071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72698071 is about 8526.3163793047. The cubic root of 72698071 is about 417.3569299541.

The spelling of 72698071 in words is "seventy-two million, six hundred ninety-eight thousand, seventy-one".