961603511 has 8 divisors (see below), whose sum is σ = 1050325248. Its totient is φ = 873099000.

The previous prime is 961603507. The next prime is 961603541. The reversal of 961603511 is 115306169.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 961603511 - 2² = 961603507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961603541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44975 + ... + 62816.

It is an arithmetic number, because the mean of its divisors is an integer number (131290656).

Almost surely, 2^961603511 is an apocalyptic number.

961603511 is a deficient number, since it is larger than the sum of its proper divisors (88721737).

961603511 is a wasteful number, since it uses less digits than its factorization.

961603511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108613.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 961603511 is about 31009.7325206136. The cubic root of 961603511 is about 987.0337739559.

The spelling of 961603511 in words is "nine hundred sixty-one million, six hundred three thousand, five hundred eleven".