64386541 has 2 divisors, whose sum is σ = 64386542. Its totient is φ = 64386540.

The previous prime is 64386533. The next prime is 64386557. The reversal of 64386541 is 14568346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 17464041 = 6850^2 + 4179^2 .

It is a cyclic number.

It is not a de Polignac number, because 64386541 - 2³ = 64386533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64386541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64386241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32193270 + 32193271.

It is an arithmetic number, because the mean of its divisors is an integer number (32193271).

Almost surely, 2^64386541 is an apocalyptic number.

It is an amenable number.

64386541 is a deficient number, since it is larger than the sum of its proper divisors (1).

64386541 is an equidigital number, since it uses as much as digits as its factorization.

64386541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 64386541 is about 8024.1224442303. The cubic root of 64386541 is about 400.8036779230.

The spelling of 64386541 in words is "sixty-four million, three hundred eighty-six thousand, five hundred forty-one".