64531841 has 6 divisors (see below), whose sum is σ = 70931826. Its totient is φ = 58665200.

The previous prime is 64531837. The next prime is 64531843. The reversal of 64531841 is 14813546.

64531841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45171841 + 19360000 = 6721^2 + 4400^2 .

It is not a de Polignac number, because 64531841 - 2² = 64531837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64531798 and 64531807.

It is not an unprimeable number, because it can be changed into a prime (64531843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266540 + ... + 266781.

It is an arithmetic number, because the mean of its divisors is an integer number (11821971).

Almost surely, 2^64531841 is an apocalyptic number.

It is an amenable number.

64531841 is a deficient number, since it is larger than the sum of its proper divisors (6399985).

64531841 is a wasteful number, since it uses less digits than its factorization.

64531841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533343 (or 533332 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 64531841 is about 8033.1712915884. The cubic root of 64531841 is about 401.1049470031.

The spelling of 64531841 in words is "sixty-four million, five hundred thirty-one thousand, eight hundred forty-one".