966191057 has 8 divisors (see below), whose sum is σ = 1076393640. Its totient is φ = 861114240.

The previous prime is 966191053. The next prime is 966191069. The reversal of 966191057 is 750191669.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 241989136 + 724201921 = 15556^2 + 26911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 966191057 - 2² = 966191053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 966190999 and 966191017.

It is not an unprimeable number, because it can be changed into a prime (966191053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281044 + ... + 1281797.

It is an arithmetic number, because the mean of its divisors is an integer number (134549205).

Almost surely, 2^966191057 is an apocalyptic number.

It is an amenable number.

966191057 is a deficient number, since it is larger than the sum of its proper divisors (110202583).

966191057 is a wasteful number, since it uses less digits than its factorization.

966191057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562883.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 966191057 is about 31083.6139629870. The cubic root of 966191057 is about 988.6009067363.

The spelling of 966191057 in words is "nine hundred sixty-six million, one hundred ninety-one thousand, fifty-seven".