64633541 has 8 divisors (see below), whose sum is σ = 78212160. Its totient is φ = 52141248.

The previous prime is 64633537. The next prime is 64633559. The reversal of 64633541 is 14533646.

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 64633541 - 2² = 64633537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64633498 and 64633507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64633571) 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, 271451 + ... + 271688.

It is an arithmetic number, because the mean of its divisors is an integer number (9776520).

Almost surely, 2^64633541 is an apocalyptic number.

It is an amenable number.

64633541 is a deficient number, since it is larger than the sum of its proper divisors (13578619).

64633541 is a wasteful number, since it uses less digits than its factorization.

64633541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543163.

The product of its digits is 25920, while the sum is 32.

The square root of 64633541 is about 8039.4988027862. The cubic root of 64633541 is about 401.3155456889.

The spelling of 64633541 in words is "sixty-four million, six hundred thirty-three thousand, five hundred forty-one".