69984517 has 2 divisors, whose sum is σ = 69984518. Its totient is φ = 69984516.

The previous prime is 69984479. The next prime is 69984547. The reversal of 69984517 is 71548996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42954916 + 27029601 = 6554^2 + 5199^2 .

It is a cyclic number.

It is not a de Polignac number, because 69984517 - 2⁷ = 69984389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69984547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34992258 + 34992259.

It is an arithmetic number, because the mean of its divisors is an integer number (34992259).

Almost surely, 2^69984517 is an apocalyptic number.

It is an amenable number.

69984517 is a deficient number, since it is larger than the sum of its proper divisors (1).

69984517 is an equidigital number, since it uses as much as digits as its factorization.

69984517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 69984517 is about 8365.6749279422. The cubic root of 69984517 is about 412.0981420925.

The spelling of 69984517 in words is "sixty-nine million, nine hundred eighty-four thousand, five hundred seventeen".