961905 has 16 divisors (see below), whose sum is σ = 1759104. Its totient is φ = 439680.

The previous prime is 961879. The next prime is 961927. The reversal of 961905 is 509169.

It is not a de Polignac number, because 961905 - 2⁶ = 961841 is a prime.

It is a super-2 number, since 2×961905² = 1850522458050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4476 + ... + 4685.

It is an arithmetic number, because the mean of its divisors is an integer number (109944).

2⁹⁶¹⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

961905 is a deficient number, since it is larger than the sum of its proper divisors (797199).

961905 is a wasteful number, since it uses less digits than its factorization.

961905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 961905 is about 980.7675565597. The cubic root of 961905 is about 98.7136917205.

The spelling of 961905 in words is "nine hundred sixty-one thousand, nine hundred five".