65403853 has 4 divisors (see below), whose sum is σ = 65647260. Its totient is φ = 65160448.

The previous prime is 65403829. The next prime is 65403869. The reversal of 65403853 is 35830456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2883204 + 62520649 = 1698^2 + 7907^2 .

It is a cyclic number.

It is not a de Polignac number, because 65403853 - 2¹³ = 65395661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65403883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121300 + ... + 121837.

It is an arithmetic number, because the mean of its divisors is an integer number (16411815).

Almost surely, 2^65403853 is an apocalyptic number.

It is an amenable number.

65403853 is a deficient number, since it is larger than the sum of its proper divisors (243407).

65403853 is a wasteful number, since it uses less digits than its factorization.

65403853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243406.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 65403853 is about 8087.2648652063. The cubic root of 65403853 is about 402.9035660129.

The spelling of 65403853 in words is "sixty-five million, four hundred three thousand, eight hundred fifty-three".