65621141 has 4 divisors (see below), whose sum is σ = 67737984. Its totient is φ = 63504300.

The previous prime is 65621131. The next prime is 65621183. The reversal of 65621141 is 14112656.

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 a cyclic number.

It is not a de Polignac number, because 65621141 - 2²² = 61426837 is a prime.

It is a super-2 number, since 2×65621141² = 8612268292283762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65621141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65621131) 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, 1058375 + ... + 1058436.

It is an arithmetic number, because the mean of its divisors is an integer number (16934496).

Almost surely, 2^65621141 is an apocalyptic number.

It is an amenable number.

65621141 is a deficient number, since it is larger than the sum of its proper divisors (2116843).

65621141 is a wasteful number, since it uses less digits than its factorization.

65621141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116842.

The product of its digits is 1440, while the sum is 26.

The square root of 65621141 is about 8100.6876868572. The cubic root of 65621141 is about 403.3492550386.

Adding to 65621141 its reverse (14112656), we get a palindrome (79733797).

The spelling of 65621141 in words is "sixty-five million, six hundred twenty-one thousand, one hundred forty-one".