961538 has 8 divisors (see below), whose sum is σ = 1505088. Its totient is φ = 459844.

The previous prime is 961531. The next prime is 961547. The reversal of 961538 is 835169.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (961531) by changing a digit.

961538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10406 + ... + 10497.

It is an arithmetic number, because the mean of its divisors is an integer number (188136).

2⁹⁶¹⁵³⁸ is an apocalyptic number.

961538 is a deficient number, since it is larger than the sum of its proper divisors (543550).

961538 is a wasteful number, since it uses less digits than its factorization.

961538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20928.

The product of its digits is 6480, while the sum is 32.

The square root of 961538 is about 980.5804403515. The cubic root of 961538 is about 98.7011358952.

The spelling of 961538 in words is "nine hundred sixty-one thousand, five hundred thirty-eight".