65446641 has 24 divisors (see below), whose sum is σ = 102134760. Its totient is φ = 40144896.

The previous prime is 65446637. The next prime is 65446669. The reversal of 65446641 is 14664456.

65446641 is a `hidden beast` number, since 6 + 5 + 4 + 4 + 6 + 641 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 176400 + 65270241 = 420^2 + 8079^2 .

It is not a de Polignac number, because 65446641 - 2² = 65446637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65446596 and 65446605.

It is not an unprimeable number, because it can be changed into a prime (65446691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45745 + ... + 47153.

It is an arithmetic number, because the mean of its divisors is an integer number (4255615).

Almost surely, 2^65446641 is an apocalyptic number.

It is an amenable number.

65446641 is a deficient number, since it is larger than the sum of its proper divisors (36688119).

65446641 is a wasteful number, since it uses less digits than its factorization.

65446641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1822 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 65446641 is about 8089.9098264443. The cubic root of 65446641 is about 402.9914083389.

The spelling of 65446641 in words is "sixty-five million, four hundred forty-six thousand, six hundred forty-one".