961623 has 12 divisors (see below), whose sum is σ = 1496040. Its totient is φ = 591696.

The previous prime is 961619. The next prime is 961627. The reversal of 961623 is 326169.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (961619) and next prime (961627).

It is not a de Polignac number, because 961623 - 2² = 961619 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3993 + ... + 4226.

It is an arithmetic number, because the mean of its divisors is an integer number (124670).

2⁹⁶¹⁶²³ is an apocalyptic number.

961623 is a deficient number, since it is larger than the sum of its proper divisors (534417).

961623 is a wasteful number, since it uses less digits than its factorization.

961623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8238 (or 8235 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 961623 is about 980.6237810700. The cubic root of 961623 is about 98.7040442044.

The spelling of 961623 in words is "nine hundred sixty-one thousand, six hundred twenty-three".