956661 has 8 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 630432.

The previous prime is 956633. The next prime is 956689. The reversal of 956661 is 166659.

It is an interprime number because it is at equal distance from previous prime (956633) and next prime (956689).

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

It is not a de Polignac number, because 956661 - 2¹³ = 948469 is a prime.

956661 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 956661.

It is not an unprimeable number, because it can be changed into a prime (956261) 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, 1525 + ... + 2058.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2⁹⁵⁶⁶⁶¹ is an apocalyptic number.

It is an amenable number.

956661 is a deficient number, since it is larger than the sum of its proper divisors (333579).

956661 is a wasteful number, since it uses less digits than its factorization.

956661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675.

The product of its digits is 9720, while the sum is 33.

The square root of 956661 is about 978.0904866115. The cubic root of 956661 is about 98.5339795331.

The spelling of 956661 in words is "nine hundred fifty-six thousand, six hundred sixty-one".