64440601 has 2 divisors, whose sum is σ = 64440602. Its totient is φ = 64440600.

The previous prime is 64440559. The next prime is 64440613. The reversal of 64440601 is 10604446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42575625 + 21864976 = 6525^2 + 4676^2 .

It is a cyclic number.

It is not a de Polignac number, because 64440601 - 2¹⁹ = 63916313 is a prime.

It is not a weakly prime, because it can be changed into another prime (64440631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32220300 + 32220301.

It is an arithmetic number, because the mean of its divisors is an integer number (32220301).

Almost surely, 2^64440601 is an apocalyptic number.

It is an amenable number.

64440601 is a deficient number, since it is larger than the sum of its proper divisors (1).

64440601 is an equidigital number, since it uses as much as digits as its factorization.

64440601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 64440601 is about 8027.4903301094. The cubic root of 64440601 is about 400.9158203325.

The spelling of 64440601 in words is "sixty-four million, four hundred forty thousand, six hundred one".