65065491 has 8 divisors (see below), whose sum is σ = 96393360. Its totient is φ = 43376976.

The previous prime is 65065489. The next prime is 65065537. The reversal of 65065491 is 19456056.

It is not a de Polignac number, because 65065491 - 2¹ = 65065489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65065391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204890 + ... + 1204943.

It is an arithmetic number, because the mean of its divisors is an integer number (12049170).

Almost surely, 2^65065491 is an apocalyptic number.

65065491 is a deficient number, since it is larger than the sum of its proper divisors (31327869).

65065491 is a wasteful number, since it uses less digits than its factorization.

65065491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409842 (or 2409836 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 65065491 is about 8066.3183051501. The cubic root of 65065491 is about 402.2075671221.

It can be divided in two parts, 65065 and 491, that added together give a palindrome (65556).

The spelling of 65065491 in words is "sixty-five million, sixty-five thousand, four hundred ninety-one".