64667241 has 20 divisors (see below), whose sum is σ = 101688400. Its totient is φ = 40841496.

The previous prime is 64667219. The next prime is 64667249. The reversal of 64667241 is 14276646.

64667241 is a `hidden beast` number, since 646 + 6 + 7 + 2 + 4 + 1 = 666.

It is not a de Polignac number, because 64667241 - 2¹⁴ = 64650857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64667196 and 64667205.

It is not an unprimeable number, because it can be changed into a prime (64667249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19471 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (5084420).

Almost surely, 2^64667241 is an apocalyptic number.

It is an amenable number.

64667241 is a deficient number, since it is larger than the sum of its proper divisors (37021159).

64667241 is a wasteful number, since it uses less digits than its factorization.

64667241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42050 (or 42041 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 64667241 is about 8041.5944314545. The cubic root of 64667241 is about 401.3852823604.

The spelling of 64667241 in words is "sixty-four million, six hundred sixty-seven thousand, two hundred forty-one".