68988847 has 2 divisors, whose sum is σ = 68988848. Its totient is φ = 68988846.

The previous prime is 68988827. The next prime is 68988851. The reversal of 68988847 is 74888986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68988847 - 2⁷ = 68988719 is a prime.

It is a super-2 number, since 2×68988847² = 9518922020778818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68988791 and 68988800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68988817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34494423 + 34494424.

It is an arithmetic number, because the mean of its divisors is an integer number (34494424).

Almost surely, 2^68988847 is an apocalyptic number.

68988847 is a deficient number, since it is larger than the sum of its proper divisors (1).

68988847 is an equidigital number, since it uses as much as digits as its factorization.

68988847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 58.

The square root of 68988847 is about 8305.9525040780. The cubic root of 68988847 is about 410.1344928593.

The spelling of 68988847 in words is "sixty-eight million, nine hundred eighty-eight thousand, eight hundred forty-seven".