64606541 has 2 divisors, whose sum is σ = 64606542. Its totient is φ = 64606540.

The previous prime is 64606513. The next prime is 64606583. The reversal of 64606541 is 14560646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39816100 + 24790441 = 6310^2 + 4979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64606541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64606498 and 64606507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64606501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32303270 + 32303271.

It is an arithmetic number, because the mean of its divisors is an integer number (32303271).

Almost surely, 2^64606541 is an apocalyptic number.

It is an amenable number.

64606541 is a deficient number, since it is larger than the sum of its proper divisors (1).

64606541 is an equidigital number, since it uses as much as digits as its factorization.

64606541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64606541 is about 8037.8194182253. The cubic root of 64606541 is about 401.2596560857.

The spelling of 64606541 in words is "sixty-four million, six hundred six thousand, five hundred forty-one".