64185029 has 2 divisors, whose sum is σ = 64185030. Its totient is φ = 64185028.

The previous prime is 64185007. The next prime is 64185041. The reversal of 64185029 is 92058146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57304900 + 6880129 = 7570^2 + 2623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64185029 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64185029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64185089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32092514 + 32092515.

It is an arithmetic number, because the mean of its divisors is an integer number (32092515).

Almost surely, 2^64185029 is an apocalyptic number.

It is an amenable number.

64185029 is a deficient number, since it is larger than the sum of its proper divisors (1).

64185029 is an equidigital number, since it uses as much as digits as its factorization.

64185029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 64185029 is about 8011.5559662278. Note that the first 3 decimals coincide. The cubic root of 64185029 is about 400.3851061974.

The spelling of 64185029 in words is "sixty-four million, one hundred eighty-five thousand, twenty-nine".