69968537 has 2 divisors, whose sum is σ = 69968538. Its totient is φ = 69968536.

The previous prime is 69968501. The next prime is 69968551. The reversal of 69968537 is 73586996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60902416 + 9066121 = 7804^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 69968537 - 2⁶ = 69968473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69968597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34984268 + 34984269.

It is an arithmetic number, because the mean of its divisors is an integer number (34984269).

Almost surely, 2^69968537 is an apocalyptic number.

It is an amenable number.

69968537 is a deficient number, since it is larger than the sum of its proper divisors (1).

69968537 is an equidigital number, since it uses as much as digits as its factorization.

69968537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 69968537 is about 8364.7197801241. The cubic root of 69968537 is about 412.0667740610.

The spelling of 69968537 in words is "sixty-nine million, nine hundred sixty-eight thousand, five hundred thirty-seven".