64155629 has 2 divisors, whose sum is σ = 64155630. Its totient is φ = 64155628.

The previous prime is 64155607. The next prime is 64155661. The reversal of 64155629 is 92655146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48930025 + 15225604 = 6995^2 + 3902^2 .

It is a cyclic number.

It is not a de Polignac number, because 64155629 - 2¹² = 64151533 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 = 64155592 and 64155601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64152629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32077814 + 32077815.

It is an arithmetic number, because the mean of its divisors is an integer number (32077815).

Almost surely, 2^64155629 is an apocalyptic number.

It is an amenable number.

64155629 is a deficient number, since it is larger than the sum of its proper divisors (1).

64155629 is an equidigital number, since it uses as much as digits as its factorization.

64155629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 64155629 is about 8009.7209064986. The cubic root of 64155629 is about 400.3239646298.

The spelling of 64155629 in words is "sixty-four million, one hundred fifty-five thousand, six hundred twenty-nine".