64498081 has 2 divisors, whose sum is σ = 64498082. Its totient is φ = 64498080.

The previous prime is 64498009. The next prime is 64498099. The reversal of 64498081 is 18089446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 14371681 = 7080^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 64498081 - 2⁹ = 64497569 is a prime.

It is a super-2 number, since 2×64498081² = 8320004905365122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64498481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32249040 + 32249041.

It is an arithmetic number, because the mean of its divisors is an integer number (32249041).

Almost surely, 2^64498081 is an apocalyptic number.

It is an amenable number.

64498081 is a deficient number, since it is larger than the sum of its proper divisors (1).

64498081 is an equidigital number, since it uses as much as digits as its factorization.

64498081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 64498081 is about 8031.0697294943. The cubic root of 64498081 is about 401.0349884376.

The spelling of 64498081 in words is "sixty-four million, four hundred ninety-eight thousand, eighty-one".