961880 has 32 divisors (see below), whose sum is σ = 2192400. Its totient is φ = 379776.

The previous prime is 961879. The next prime is 961927. The reversal of 961880 is 88169.

961880 = T₁₉₉ + T₂₀₀ + ... + T₂₃₈.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 5474 + ... + 5646.

2⁹⁶¹⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

961880 is an abundant number, since it is smaller than the sum of its proper divisors (1230520).

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

961880 is a wasteful number, since it uses less digits than its factorization.

961880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 961880 is about 980.7548113570. The cubic root of 961880 is about 98.7128365204.

The spelling of 961880 in words is "nine hundred sixty-one thousand, eight hundred eighty".