69205138 has 4 divisors (see below), whose sum is σ = 103807710. Its totient is φ = 34602568.

The previous prime is 69205127. The next prime is 69205141. The reversal of 69205138 is 83150296.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53626329 + 15578809 = 7323^2 + 3947^2 .

It is a super-2 number, since 2×69205138² = 9578702251198088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17301283 + ... + 17301286.

Almost surely, 2^69205138 is an apocalyptic number.

69205138 is a deficient number, since it is larger than the sum of its proper divisors (34602572).

69205138 is a wasteful number, since it uses less digits than its factorization.

69205138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34602571.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 69205138 is about 8318.9625555114. The cubic root of 69205138 is about 410.5626579884.

The spelling of 69205138 in words is "sixty-nine million, two hundred five thousand, one hundred thirty-eight".