69988273 has 2 divisors, whose sum is σ = 69988274. Its totient is φ = 69988272.

The previous prime is 69988207. The next prime is 69988277. The reversal of 69988273 is 37288996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52823824 + 17164449 = 7268^2 + 4143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69988273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69988273.

It is not a weakly prime, because it can be changed into another prime (69988277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34994136 + 34994137.

It is an arithmetic number, because the mean of its divisors is an integer number (34994137).

Almost surely, 2^69988273 is an apocalyptic number.

It is an amenable number.

69988273 is a deficient number, since it is larger than the sum of its proper divisors (1).

69988273 is an equidigital number, since it uses as much as digits as its factorization.

69988273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 69988273 is about 8365.8994136913. The cubic root of 69988273 is about 412.1055142609.

The spelling of 69988273 in words is "sixty-nine million, nine hundred eighty-eight thousand, two hundred seventy-three".