138669006 has 32 divisors (see below), whose sum is σ = 317306880. Its totient is φ = 39576096.

The previous prime is 138668993. The next prime is 138669019. The reversal of 138669006 is 600966831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138668993) and next prime (138669019).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72940 + ... + 74816.

It is an arithmetic number, because the mean of its divisors is an integer number (9915840).

Almost surely, 2^138669006 is an apocalyptic number.

138669006 is an abundant number, since it is smaller than the sum of its proper divisors (178637874).

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

138669006 is a wasteful number, since it uses less digits than its factorization.

138669006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 138669006 is about 11775.7804836877. The cubic root of 138669006 is about 517.5986490739.

The spelling of 138669006 in words is "one hundred thirty-eight million, six hundred sixty-nine thousand, six".