65139107 has 4 divisors (see below), whose sum is σ = 71060856. Its totient is φ = 59217360.

The previous prime is 65139103. The next prime is 65139131. The reversal of 65139107 is 70193156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65139107 - 2² = 65139103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65139101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960858 + ... + 2960879.

It is an arithmetic number, because the mean of its divisors is an integer number (17765214).

Almost surely, 2^65139107 is an apocalyptic number.

65139107 is a deficient number, since it is larger than the sum of its proper divisors (5921749).

65139107 is a wasteful number, since it uses less digits than its factorization.

65139107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921748.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 65139107 is about 8070.8801874393. The cubic root of 65139107 is about 402.3591976930.

The spelling of 65139107 in words is "sixty-five million, one hundred thirty-nine thousand, one hundred seven".