971646 has 16 divisors (see below), whose sum is σ = 2092944. Its totient is φ = 298944.

The previous prime is 971639. The next prime is 971651. The reversal of 971646 is 646179.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

971646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6151 + ... + 6306.

It is an arithmetic number, because the mean of its divisors is an integer number (130809).

2⁹⁷¹⁶⁴⁶ is an apocalyptic number.

971646 is an abundant number, since it is smaller than the sum of its proper divisors (1121298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971646 is a wasteful number, since it uses less digits than its factorization.

971646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12475.

The product of its digits is 9072, while the sum is 33.

The square root of 971646 is about 985.7210558774. The cubic root of 971646 is about 99.0457904691.

The spelling of 971646 in words is "nine hundred seventy-one thousand, six hundred forty-six".