15648601 has 2 divisors, whose sum is σ = 15648602. Its totient is φ = 15648600.

The previous prime is 15648599. The next prime is 15648617. The reversal of 15648601 is 10684651.

15648601 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 2253001 = 3660^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 15648601 - 2¹ = 15648599 is a prime.

Together with 15648599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15648631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7824300 + 7824301.

It is an arithmetic number, because the mean of its divisors is an integer number (7824301).

Almost surely, 2^15648601 is an apocalyptic number.

It is an amenable number.

15648601 is a deficient number, since it is larger than the sum of its proper divisors (1).

15648601 is an equidigital number, since it uses as much as digits as its factorization.

15648601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 15648601 is about 3955.8312653600. The cubic root of 15648601 is about 250.1258086781.

The spelling of 15648601 in words is "fifteen million, six hundred forty-eight thousand, six hundred one".