64246109 has 2 divisors, whose sum is σ = 64246110. Its totient is φ = 64246108.

The previous prime is 64246081. The next prime is 64246141. The reversal of 64246109 is 90164246.

It is a happy number.

It is an a-pointer prime, because the next prime (64246141) can be obtained adding 64246109 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 15288100 = 6997^2 + 3910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64246109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64246159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32123054 + 32123055.

It is an arithmetic number, because the mean of its divisors is an integer number (32123055).

Almost surely, 2^64246109 is an apocalyptic number.

It is an amenable number.

64246109 is a deficient number, since it is larger than the sum of its proper divisors (1).

64246109 is an equidigital number, since it uses as much as digits as its factorization.

64246109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 64246109 is about 8015.3670533545. The cubic root of 64246109 is about 400.5120712612.

The spelling of 64246109 in words is "sixty-four million, two hundred forty-six thousand, one hundred nine".