64334641 has 8 divisors (see below), whose sum is σ = 75897344. Its totient is φ = 53364960.

The previous prime is 64334639. The next prime is 64334651. The reversal of 64334641 is 14643346.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64334641 - 2¹ = 64334639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64334651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148020 + ... + 148453.

It is an arithmetic number, because the mean of its divisors is an integer number (9487168).

Almost surely, 2^64334641 is an apocalyptic number.

It is an amenable number.

64334641 is a deficient number, since it is larger than the sum of its proper divisors (11562703).

64334641 is a wasteful number, since it uses less digits than its factorization.

64334641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296511.

The product of its digits is 20736, while the sum is 31.

The square root of 64334641 is about 8020.8877937545. The cubic root of 64334641 is about 400.6959571568.

Adding to 64334641 its reverse (14643346), we get a palindrome (78977987).

The spelling of 64334641 in words is "sixty-four million, three hundred thirty-four thousand, six hundred forty-one".