65139922 has 4 divisors (see below), whose sum is σ = 97709886. Its totient is φ = 32569960.

The previous prime is 65139911. The next prime is 65139941. The reversal of 65139922 is 22993156.

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

It can be written as a sum of positive squares in only one way, i.e., 40844881 + 24295041 = 6391^2 + 4929^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16284979 + ... + 16284982.

Almost surely, 2^65139922 is an apocalyptic number.

65139922 is a deficient number, since it is larger than the sum of its proper divisors (32569964).

65139922 is a wasteful number, since it uses less digits than its factorization.

65139922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32569963.

The product of its digits is 29160, while the sum is 37.

The square root of 65139922 is about 8070.9306774374. The cubic root of 65139922 is about 402.3608757499.

The spelling of 65139922 in words is "sixty-five million, one hundred thirty-nine thousand, nine hundred twenty-two".