65631441 has 16 divisors (see below), whose sum is σ = 93394944. Its totient is φ = 40852224.

The previous prime is 65631439. The next prime is 65631463. The reversal of 65631441 is 14413656.

It is not a de Polignac number, because 65631441 - 2¹ = 65631439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65631399 and 65631408.

It is not an unprimeable number, because it can be changed into a prime (65631431) 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, 1411 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (5837184).

Almost surely, 2^65631441 is an apocalyptic number.

It is an amenable number.

65631441 is a deficient number, since it is larger than the sum of its proper divisors (27763503).

65631441 is a wasteful number, since it uses less digits than its factorization.

65631441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280.

The product of its digits is 8640, while the sum is 30.

The square root of 65631441 is about 8101.3234104065. The cubic root of 65631441 is about 403.3703573842.

The spelling of 65631441 in words is "sixty-five million, six hundred thirty-one thousand, four hundred forty-one".