961958 has 4 divisors (see below), whose sum is σ = 1442940. Its totient is φ = 480978.

The previous prime is 961957. The next prime is 961973. The reversal of 961958 is 859169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 859169 = 761 ⋅1129.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240488 + ... + 240491.

It is an arithmetic number, because the mean of its divisors is an integer number (360735).

2⁹⁶¹⁹⁵⁸ is an apocalyptic number.

961958 is a deficient number, since it is larger than the sum of its proper divisors (480982).

961958 is a wasteful number, since it uses less digits than its factorization.

961958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480981.

The product of its digits is 19440, while the sum is 38.

The square root of 961958 is about 980.7945758414. The cubic root of 961958 is about 98.7155046956.

The spelling of 961958 in words is "nine hundred sixty-one thousand, nine hundred fifty-eight".