69206138 has 4 divisors (see below), whose sum is σ = 103809210. Its totient is φ = 34603068.

The previous prime is 69206107. The next prime is 69206141. The reversal of 69206138 is 83160296.

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., 55905529 + 13300609 = 7477^2 + 3647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69206098 and 69206107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17301533 + ... + 17301536.

Almost surely, 2^69206138 is an apocalyptic number.

69206138 is a deficient number, since it is larger than the sum of its proper divisors (34603072).

69206138 is a wasteful number, since it uses less digits than its factorization.

69206138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34603071.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 69206138 is about 8319.0226589426. The cubic root of 69206138 is about 410.5646354942.

The spelling of 69206138 in words is "sixty-nine million, two hundred six thousand, one hundred thirty-eight".