9660401 has 2 divisors, whose sum is σ = 9660402. Its totient is φ = 9660400.

The previous prime is 9660397. The next prime is 9660407. The reversal of 9660401 is 1040669.

9660401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5664400 + 3996001 = 2380^2 + 1999^2 .

It is a cyclic number.

It is not a de Polignac number, because 9660401 - 2² = 9660397 is a prime.

It is not a weakly prime, because it can be changed into another prime (9660407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830200 + 4830201.

It is an arithmetic number, because the mean of its divisors is an integer number (4830201).

Almost surely, 2^9660401 is an apocalyptic number.

It is an amenable number.

9660401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9660401 is an equidigital number, since it uses as much as digits as its factorization.

9660401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 9660401 is about 3108.1185627321. The cubic root of 9660401 is about 212.9765158853.

The spelling of 9660401 in words is "nine million, six hundred sixty thousand, four hundred one".