99967537 has 2 divisors, whose sum is σ = 99967538. Its totient is φ = 99967536.

The previous prime is 99967519. The next prime is 99967573. The reversal of 99967537 is 73576999.

Together with next prime (99967573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 147456 = 9991^2 + 384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99967537 is a prime.

It is not a weakly prime, because it can be changed into another prime (99967237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49983768 + 49983769.

It is an arithmetic number, because the mean of its divisors is an integer number (49983769).

Almost surely, 2^99967537 is an apocalyptic number.

It is an amenable number.

99967537 is a deficient number, since it is larger than the sum of its proper divisors (1).

99967537 is an equidigital number, since it uses as much as digits as its factorization.

99967537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3214890, while the sum is 55.

The square root of 99967537 is about 9998.3767182478. The cubic root of 99967537 is about 464.1086512925.

The spelling of 99967537 in words is "ninety-nine million, nine hundred sixty-seven thousand, five hundred thirty-seven".