15676961 has 4 divisors (see below), whose sum is σ = 16358592. Its totient is φ = 14995332.

The previous prime is 15676943. The next prime is 15676963. The reversal of 15676961 is 16967651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15676961 - 2¹⁴ = 15660577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15676963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340781 + ... + 340826.

It is an arithmetic number, because the mean of its divisors is an integer number (4089648).

Almost surely, 2^15676961 is an apocalyptic number.

It is an amenable number.

15676961 is a deficient number, since it is larger than the sum of its proper divisors (681631).

15676961 is an equidigital number, since it uses as much as digits as its factorization.

15676961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681630.

The product of its digits is 68040, while the sum is 41.

The square root of 15676961 is about 3959.4142243519. The cubic root of 15676961 is about 250.2768187058.

The spelling of 15676961 in words is "fifteen million, six hundred seventy-six thousand, nine hundred sixty-one".