64622449 has 2 divisors, whose sum is σ = 64622450. Its totient is φ = 64622448.

The previous prime is 64622443. The next prime is 64622497. The reversal of 64622449 is 94422646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61732449 + 2890000 = 7857^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 64622449 - 2¹¹ = 64620401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64622443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32311224 + 32311225.

It is an arithmetic number, because the mean of its divisors is an integer number (32311225).

Almost surely, 2^64622449 is an apocalyptic number.

It is an amenable number.

64622449 is a deficient number, since it is larger than the sum of its proper divisors (1).

64622449 is an equidigital number, since it uses as much as digits as its factorization.

64622449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The square root of 64622449 is about 8038.8089291885. The cubic root of 64622449 is about 401.2925872960.

It can be divided in two parts, 6462 and 2449, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 64622449 in words is "sixty-four million, six hundred twenty-two thousand, four hundred forty-nine".