961170641 has 4 divisors (see below), whose sum is σ = 970687284. Its totient is φ = 951654000.

The previous prime is 961170629. The next prime is 961170649. The reversal of 961170641 is 146071169.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 665846416 + 295324225 = 25804^2 + 17185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961170641 is a prime.

It is a super-2 number, since 2×961170641² = 1847698002240701762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961170649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4758170 + ... + 4758371.

It is an arithmetic number, because the mean of its divisors is an integer number (242671821).

Almost surely, 2^961170641 is an apocalyptic number.

It is an amenable number.

961170641 is a deficient number, since it is larger than the sum of its proper divisors (9516643).

961170641 is a wasteful number, since it uses less digits than its factorization.

961170641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9516642.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 961170641 is about 31002.7521520268. The cubic root of 961170641 is about 986.8856458790.

The spelling of 961170641 in words is "nine hundred sixty-one million, one hundred seventy thousand, six hundred forty-one".