961698881 has 8 divisors (see below), whose sum is σ = 1129828224. Its totient is φ = 807019920.

The previous prime is 961698863. The next prime is 961698887. The reversal of 961698881 is 188896169.

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 961698881 - 2¹⁴ = 961682497 is a prime.

It is a super-2 number, since 2×961698881² = 1849729475433304322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961698887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3362441 + ... + 3362726.

It is an arithmetic number, because the mean of its divisors is an integer number (141228528).

Almost surely, 2^961698881 is an apocalyptic number.

It is an amenable number.

961698881 is a deficient number, since it is larger than the sum of its proper divisors (168129343).

961698881 is a wasteful number, since it uses less digits than its factorization.

961698881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725191.

The product of its digits is 1492992, while the sum is 56.

The square root of 961698881 is about 31011.2702255164. The cubic root of 961698881 is about 987.0664035855.

The spelling of 961698881 in words is "nine hundred sixty-one million, six hundred ninety-eight thousand, eight hundred eighty-one".