65988465 has 16 divisors (see below), whose sum is σ = 107070336. Its totient is φ = 34697600.

The previous prime is 65988457. The next prime is 65988467. The reversal of 65988465 is 56488956.

It is not a de Polignac number, because 65988465 - 2³ = 65988457 is a prime.

It is a super-3 number, since 3×65988465³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65988467) 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, 29916 + ... + 32045.

It is an arithmetic number, because the mean of its divisors is an integer number (6691896).

Almost surely, 2^65988465 is an apocalyptic number.

It is an amenable number.

65988465 is a deficient number, since it is larger than the sum of its proper divisors (41081871).

65988465 is a wasteful number, since it uses less digits than its factorization.

65988465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62040.

The product of its digits is 2073600, while the sum is 51.

The square root of 65988465 is about 8123.3284434399. The cubic root of 65988465 is about 404.1004574058.

The spelling of 65988465 in words is "sixty-five million, nine hundred eighty-eight thousand, four hundred sixty-five".