64422497 has 2 divisors, whose sum is σ = 64422498. Its totient is φ = 64422496.

The previous prime is 64422487. The next prime is 64422499. The reversal of 64422497 is 79422446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62980096 + 1442401 = 7936^2 + 1201^2 .

It is a cyclic number.

It is not a de Polignac number, because 64422497 - 2⁴ = 64422481 is a prime.

Together with 64422499, it forms a pair of twin primes.

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 64422497.

It is not a weakly prime, because it can be changed into another prime (64422499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32211248 + 32211249.

It is an arithmetic number, because the mean of its divisors is an integer number (32211249).

Almost surely, 2^64422497 is an apocalyptic number.

It is an amenable number.

64422497 is a deficient number, since it is larger than the sum of its proper divisors (1).

64422497 is an equidigital number, since it uses as much as digits as its factorization.

64422497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 64422497 is about 8026.3626257477. The cubic root of 64422497 is about 400.8782722665.

The spelling of 64422497 in words is "sixty-four million, four hundred twenty-two thousand, four hundred ninety-seven".