961924561 has 16 divisors (see below), whose sum is σ = 1097115264. Its totient is φ = 836630784.

The previous prime is 961924559. The next prime is 961924573. The reversal of 961924561 is 165429169.

It is a cyclic number.

It is not a de Polignac number, because 961924561 - 2¹ = 961924559 is a prime.

It is a super-2 number, since 2×961924561² = 1850597722110085442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961924541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3976 + ... + 44041.

It is an arithmetic number, because the mean of its divisors is an integer number (68569704).

Almost surely, 2^961924561 is an apocalyptic number.

It is an amenable number.

961924561 is a deficient number, since it is larger than the sum of its proper divisors (135190703).

961924561 is a wasteful number, since it uses less digits than its factorization.

961924561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48120.

The product of its digits is 116640, while the sum is 43.

The square root of 961924561 is about 31014.9086892095. The cubic root of 961924561 is about 987.1436085290.

The spelling of 961924561 in words is "nine hundred sixty-one million, nine hundred twenty-four thousand, five hundred sixty-one".