64648901 has 2 divisors, whose sum is σ = 64648902. Its totient is φ = 64648900.

The previous prime is 64648867. The next prime is 64648907. The reversal of 64648901 is 10984646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 12952801 = 7190^2 + 3599^2 .

It is a cyclic number.

It is not a de Polignac number, because 64648901 - 2¹⁴ = 64632517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64648907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32324450 + 32324451.

It is an arithmetic number, because the mean of its divisors is an integer number (32324451).

Almost surely, 2^64648901 is an apocalyptic number.

It is an amenable number.

64648901 is a deficient number, since it is larger than the sum of its proper divisors (1).

64648901 is an equidigital number, since it uses as much as digits as its factorization.

64648901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 64648901 is about 8040.4540294687. The cubic root of 64648901 is about 401.3473337175.

The spelling of 64648901 in words is "sixty-four million, six hundred forty-eight thousand, nine hundred one".