138695061 has 8 divisors (see below), whose sum is σ = 195804864. Its totient is φ = 87024320.

The previous prime is 138695047. The next prime is 138695069. The reversal of 138695061 is 160596831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138695061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138695069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359705 + ... + 1359806.

It is an arithmetic number, because the mean of its divisors is an integer number (24475608).

Almost surely, 2^138695061 is an apocalyptic number.

It is an amenable number.

138695061 is a deficient number, since it is larger than the sum of its proper divisors (57109803).

138695061 is a wasteful number, since it uses less digits than its factorization.

138695061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719531.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 138695061 is about 11776.8867278241. The cubic root of 138695061 is about 517.6310648450.

The spelling of 138695061 in words is "one hundred thirty-eight million, six hundred ninety-five thousand, sixty-one".