961915 has 4 divisors (see below), whose sum is σ = 1154304. Its totient is φ = 769528.

The previous prime is 961879. The next prime is 961927. The reversal of 961915 is 519169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519169 = 7 ⋅74167.

It is a cyclic number.

It is not a de Polignac number, because 961915 - 2¹¹ = 959867 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96187 + ... + 96196.

It is an arithmetic number, because the mean of its divisors is an integer number (288576).

2⁹⁶¹⁹¹⁵ is an apocalyptic number.

961915 is a deficient number, since it is larger than the sum of its proper divisors (192389).

961915 is a wasteful number, since it uses less digits than its factorization.

961915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192388.

The product of its digits is 2430, while the sum is 31.

The square root of 961915 is about 980.7726545943. The cubic root of 961915 is about 98.7140337964.

The spelling of 961915 in words is "nine hundred sixty-one thousand, nine hundred fifteen".