961635 has 8 divisors (see below), whose sum is σ = 1538640. Its totient is φ = 512864.

The previous prime is 961633. The next prime is 961637. The reversal of 961635 is 536169.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (961633) and next prime (961637).

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 961635 - 2¹ = 961633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32040 + ... + 32069.

It is an arithmetic number, because the mean of its divisors is an integer number (192330).

2⁹⁶¹⁶³⁵ is an apocalyptic number.

961635 is a deficient number, since it is larger than the sum of its proper divisors (577005).

961635 is a wasteful number, since it uses less digits than its factorization.

961635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64117.

The product of its digits is 4860, while the sum is 30.

The square root of 961635 is about 980.6298996054. The cubic root of 961635 is about 98.7044547754.

It can be divided in two parts, 961 and 635, that added together give a triangular number (1596 = T₅₆).

The spelling of 961635 in words is "nine hundred sixty-one thousand, six hundred thirty-five".