69684121 has 16 divisors (see below), whose sum is σ = 76958224. Its totient is φ = 62705664.

The previous prime is 69684119. The next prime is 69684137. The reversal of 69684121 is 12148696.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1125721 + 68558400 = 1061^2 + 8280^2 .

It is a cyclic number.

It is not a de Polignac number, because 69684121 - 2¹ = 69684119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69684151) 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 in 15 ways as a sum of consecutive naturals, for example, 91675 + ... + 92431.

It is an arithmetic number, because the mean of its divisors is an integer number (4809889).

Almost surely, 2^69684121 is an apocalyptic number.

It is an amenable number.

69684121 is a deficient number, since it is larger than the sum of its proper divisors (7274103).

69684121 is a wasteful number, since it uses less digits than its factorization.

69684121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its digits is 20736, while the sum is 37.

The square root of 69684121 is about 8347.7015399450. The cubic root of 69684121 is about 411.5076773173.

The spelling of 69684121 in words is "sixty-nine million, six hundred eighty-four thousand, one hundred twenty-one".