69091016 has 8 divisors (see below), whose sum is σ = 129545670. Its totient is φ = 34545504.

The previous prime is 69091007. The next prime is 69091019. The reversal of 69091016 is 61019096.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 6522916 = 7910^2 + 2554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (69091019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4318181 + ... + 4318196.

Almost surely, 2^69091016 is an apocalyptic number.

It is an amenable number.

69091016 is a deficient number, since it is larger than the sum of its proper divisors (60454654).

69091016 is a wasteful number, since it uses less digits than its factorization.

69091016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8636383 (or 8636379 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 69091016 is about 8312.1005768698. The cubic root of 69091016 is about 410.3368558227.

The spelling of 69091016 in words is "sixty-nine million, ninety-one thousand, sixteen".