65169449 has 16 divisors (see below), whose sum is σ = 73483200. Its totient is φ = 57429504.

The previous prime is 65169427. The next prime is 65169463. The reversal of 65169449 is 94496156.

It is a cyclic number.

It is not a de Polignac number, because 65169449 - 2²⁰ = 64120873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65169499) 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, 27614 + ... + 29880.

It is an arithmetic number, because the mean of its divisors is an integer number (4592700).

Almost surely, 2^65169449 is an apocalyptic number.

It is an amenable number.

65169449 is a deficient number, since it is larger than the sum of its proper divisors (8313751).

65169449 is a wasteful number, since it uses less digits than its factorization.

65169449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its digits is 233280, while the sum is 44.

The square root of 65169449 is about 8072.7596892265. The cubic root of 65169449 is about 402.4216613868.

The spelling of 65169449 in words is "sixty-five million, one hundred sixty-nine thousand, four hundred forty-nine".