65879553 has 4 divisors (see below), whose sum is σ = 87839408. Its totient is φ = 43919700.

The previous prime is 65879537. The next prime is 65879603. The reversal of 65879553 is 35597856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65879553 - 2⁴ = 65879537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65879353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10979923 + ... + 10979928.

It is an arithmetic number, because the mean of its divisors is an integer number (21959852).

Almost surely, 2^65879553 is an apocalyptic number.

It is an amenable number.

65879553 is a deficient number, since it is larger than the sum of its proper divisors (21959855).

65879553 is a wasteful number, since it uses less digits than its factorization.

65879553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21959854.

The product of its digits is 1134000, while the sum is 48.

The square root of 65879553 is about 8116.6220190422. The cubic root of 65879553 is about 403.8780163858.

The spelling of 65879553 in words is "sixty-five million, eight hundred seventy-nine thousand, five hundred fifty-three".