966817551 has 16 divisors (see below), whose sum is σ = 1487835648. Its totient is φ = 546996000.

The previous prime is 966817549. The next prime is 966817561. The reversal of 966817551 is 155718669.

It is not a de Polignac number, because 966817551 - 2¹ = 966817549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 966817551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966817561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225795 + ... + 230036.

It is an arithmetic number, because the mean of its divisors is an integer number (92989728).

Almost surely, 2^966817551 is an apocalyptic number.

966817551 is a deficient number, since it is larger than the sum of its proper divisors (521018097).

966817551 is a wasteful number, since it uses less digits than its factorization.

966817551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455942.

The product of its digits is 453600, while the sum is 48.

The square root of 966817551 is about 31093.6898903942. The cubic root of 966817551 is about 988.8145355398.

The spelling of 966817551 in words is "nine hundred sixty-six million, eight hundred seventeen thousand, five hundred fifty-one".