65509941 has 16 divisors (see below), whose sum is σ = 102147584. Its totient is φ = 36563184.

The previous prime is 65509933. The next prime is 65509979. The reversal of 65509941 is 14990556.

It is not a de Polignac number, because 65509941 - 2³ = 65509933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65509941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65509901) 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, 35371 + ... + 37176.

It is an arithmetic number, because the mean of its divisors is an integer number (6384224).

Almost surely, 2^65509941 is an apocalyptic number.

It is an amenable number.

65509941 is a deficient number, since it is larger than the sum of its proper divisors (36637643).

65509941 is a wasteful number, since it uses less digits than its factorization.

65509941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72600.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 65509941 is about 8093.8211618493. The cubic root of 65509941 is about 403.1212909219.

The spelling of 65509941 in words is "sixty-five million, five hundred nine thousand, nine hundred forty-one".