9745310621 has 2 divisors, whose sum is σ = 9745310622. Its totient is φ = 9745310620.

The previous prime is 9745310609. The next prime is 9745310647. The reversal of 9745310621 is 1260135479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9194892100 + 550418521 = 95890^2 + 23461^2 .

It is an emirp because it is prime and its reverse (1260135479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9745310621 - 2⁶ = 9745310557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9745310021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4872655310 + 4872655311.

It is an arithmetic number, because the mean of its divisors is an integer number (4872655311).

Almost surely, 2^9745310621 is an apocalyptic number.

It is an amenable number.

9745310621 is a deficient number, since it is larger than the sum of its proper divisors (1).

9745310621 is an equidigital number, since it uses as much as digits as its factorization.

9745310621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 9745310621 is about 98718.3398411866. The cubic root of 9745310621 is about 2135.9867882172.

The spelling of 9745310621 in words is "nine billion, seven hundred forty-five million, three hundred ten thousand, six hundred twenty-one".