138770697 has 8 divisors (see below), whose sum is σ = 199260544. Its totient is φ = 85397328.

The previous prime is 138770659. The next prime is 138770717. The reversal of 138770697 is 796077831.

It is a happy number.

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

It is not a de Polignac number, because 138770697 - 2¹² = 138766601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138770617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779073 + ... + 1779150.

It is an arithmetic number, because the mean of its divisors is an integer number (24907568).

Almost surely, 2^138770697 is an apocalyptic number.

It is an amenable number.

138770697 is a deficient number, since it is larger than the sum of its proper divisors (60489847).

138770697 is a wasteful number, since it uses less digits than its factorization.

138770697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558239.

The product of its (nonzero) digits is 444528, while the sum is 48.

The square root of 138770697 is about 11780.0974953521. The cubic root of 138770697 is about 517.7251427646.

The spelling of 138770697 in words is "one hundred thirty-eight million, seven hundred seventy thousand, six hundred ninety-seven".