69693138 has 12 divisors (see below), whose sum is σ = 151001838. Its totient is φ = 23231040.

The previous prime is 69693137. The next prime is 69693157. The reversal of 69693138 is 83139696.

It can be written as a sum of positive squares in only one way, i.e., 46335249 + 23357889 = 6807^2 + 4833^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69693093 and 69693102.

It is not an unprimeable number, because it can be changed into a prime (69693137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1935903 + ... + 1935938.

Almost surely, 2^69693138 is an apocalyptic number.

69693138 is an abundant number, since it is smaller than the sum of its proper divisors (81308700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69693138 is a wasteful number, since it uses less digits than its factorization.

69693138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871849 (or 3871846 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 69693138 is about 8348.2416112616. The cubic root of 69693138 is about 411.5254260030.

The spelling of 69693138 in words is "sixty-nine million, six hundred ninety-three thousand, one hundred thirty-eight".