64012621 has 2 divisors, whose sum is σ = 64012622. Its totient is φ = 64012620.

The previous prime is 64012601. The next prime is 64012651. The reversal of 64012621 is 12621046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50211396 + 13801225 = 7086^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 64012621 - 2⁷ = 64012493 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64012592 and 64012601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64012601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32006310 + 32006311.

It is an arithmetic number, because the mean of its divisors is an integer number (32006311).

Almost surely, 2^64012621 is an apocalyptic number.

It is an amenable number.

64012621 is a deficient number, since it is larger than the sum of its proper divisors (1).

64012621 is an equidigital number, since it uses as much as digits as its factorization.

64012621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 64012621 is about 8000.7887736148. The cubic root of 64012621 is about 400.0262920218.

Adding to 64012621 its reverse (12621046), we get a palindrome (76633667).

The spelling of 64012621 in words is "sixty-four million, twelve thousand, six hundred twenty-one".