69668887 has 2 divisors, whose sum is σ = 69668888. Its totient is φ = 69668886.

The previous prime is 69668857. The next prime is 69668897. The reversal of 69668887 is 78886696.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69668887 - 2¹⁹ = 69144599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69668857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34834443 + 34834444.

It is an arithmetic number, because the mean of its divisors is an integer number (34834444).

Almost surely, 2^69668887 is an apocalyptic number.

69668887 is a deficient number, since it is larger than the sum of its proper divisors (1).

69668887 is an equidigital number, since it uses as much as digits as its factorization.

69668887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 58.

The square root of 69668887 is about 8346.7890233311. The cubic root of 69668887 is about 411.4776878699.

The spelling of 69668887 in words is "sixty-nine million, six hundred sixty-eight thousand, eight hundred eighty-seven".