67696537 has 2 divisors, whose sum is σ = 67696538. Its totient is φ = 67696536.

The previous prime is 67696523. The next prime is 67696549. The reversal of 67696537 is 73569676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50424201 + 17272336 = 7101^2 + 4156^2 .

It is a cyclic number.

It is not a de Polignac number, because 67696537 - 2¹¹ = 67694489 is a prime.

It is a super-2 number, since 2×67696537² = 9165642243584738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67696037) 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, 33848268 + 33848269.

It is an arithmetic number, because the mean of its divisors is an integer number (33848269).

Almost surely, 2^67696537 is an apocalyptic number.

It is an amenable number.

67696537 is a deficient number, since it is larger than the sum of its proper divisors (1).

67696537 is an equidigital number, since it uses as much as digits as its factorization.

67696537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 49.

The square root of 67696537 is about 8227.7905296623. The cubic root of 67696537 is about 407.5574325314.

The spelling of 67696537 in words is "sixty-seven million, six hundred ninety-six thousand, five hundred thirty-seven".