65741521 has 8 divisors (see below), whose sum is σ = 70966080. Its totient is φ = 60714192.

The previous prime is 65741513. The next prime is 65741531. The reversal of 65741521 is 12514756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65741521 - 2³ = 65741513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65741531) 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, 48615 + ... + 49948.

It is an arithmetic number, because the mean of its divisors is an integer number (8870760).

Almost surely, 2^65741521 is an apocalyptic number.

It is an amenable number.

65741521 is a deficient number, since it is larger than the sum of its proper divisors (5224559).

65741521 is a wasteful number, since it uses less digits than its factorization.

65741521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98615.

The product of its digits is 8400, while the sum is 31.

The square root of 65741521 is about 8108.1145157182. The cubic root of 65741521 is about 403.5957483780.

The spelling of 65741521 in words is "sixty-five million, seven hundred forty-one thousand, five hundred twenty-one".