65291138 has 8 divisors (see below), whose sum is σ = 106840080. Its totient is φ = 29677780.

The previous prime is 65291129. The next prime is 65291141. The reversal of 65291138 is 83119256.

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

It is a junction number, because it is equal to n+sod(n) for n = 65291098 and 65291107.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1483868 + ... + 1483911.

It is an arithmetic number, because the mean of its divisors is an integer number (13355010).

Almost surely, 2^65291138 is an apocalyptic number.

65291138 is a deficient number, since it is larger than the sum of its proper divisors (41548942).

65291138 is a wasteful number, since it uses less digits than its factorization.

65291138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967792.

The product of its digits is 12960, while the sum is 35.

The square root of 65291138 is about 8080.2931877501. The cubic root of 65291138 is about 402.6719823660.

It can be divided in two parts, 6529 and 1138, that added together give a palindrome (7667).

The spelling of 65291138 in words is "sixty-five million, two hundred ninety-one thousand, one hundred thirty-eight".