961650 has 36 divisors (see below), whose sum is σ = 2584842. Its totient is φ = 256320.

The previous prime is 961643. The next prime is 961657. The reversal of 961650 is 56169.

961650 is a `hidden beast` number, since 9 + 6 + 1 + 650 = 666.

It is an interprime number because it is at equal distance from previous prime (961643) and next prime (961657).

It can be written as a sum of positive squares in 3 ways, for example, as 447561 + 514089 = 669^2 + 717^2 .

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 961650.

It is not an unprimeable number, because it can be changed into a prime (961657) by changing a digit.

961650 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 17 ways as a sum of consecutive naturals, for example, 619 + ... + 1518.

2⁹⁶¹⁶⁵⁰ is an apocalyptic number.

961650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

961650 is an abundant number, since it is smaller than the sum of its proper divisors (1623192).

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

961650 is a wasteful number, since it uses less digits than its factorization.

961650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 961650 is about 980.6375477209. The cubic root of 961650 is about 98.7049679844.

The spelling of 961650 in words is "nine hundred sixty-one thousand, six hundred fifty".