961630617 has 4 divisors (see below), whose sum is σ = 1282174160. Its totient is φ = 641087076.

The previous prime is 961630583. The next prime is 961630627. The reversal of 961630617 is 716036169.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 961630617 - 2¹² = 961626521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961630627) 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, 160271767 + ... + 160271772.

It is an arithmetic number, because the mean of its divisors is an integer number (320543540).

Almost surely, 2^961630617 is an apocalyptic number.

It is an amenable number.

961630617 is a deficient number, since it is larger than the sum of its proper divisors (320543543).

961630617 is a wasteful number, since it uses less digits than its factorization.

961630617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320543542.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 961630617 is about 31010.1695738672. The cubic root of 961630617 is about 987.0430481476.

The spelling of 961630617 in words is "nine hundred sixty-one million, six hundred thirty thousand, six hundred seventeen".