139654065 has 16 divisors (see below), whose sum is σ = 236590848. Its totient is φ = 70100736.

The previous prime is 139654049. The next prime is 139654069. The reversal of 139654065 is 560456931.

139654065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139654065 - 2⁴ = 139654049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139654069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273577 + ... + 274086.

It is an arithmetic number, because the mean of its divisors is an integer number (14786928).

Almost surely, 2^139654065 is an apocalyptic number.

139654065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139654065 is a deficient number, since it is larger than the sum of its proper divisors (96936783).

139654065 is a wasteful number, since it uses less digits than its factorization.

139654065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547688.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 139654065 is about 11817.5321027700. The cubic root of 139654065 is about 518.8213751889.

The spelling of 139654065 in words is "one hundred thirty-nine million, six hundred fifty-four thousand, sixty-five".