961787965 has 8 divisors (see below), whose sum is σ = 1157834808. Its totient is φ = 766970880.

The previous prime is 961787947. The next prime is 961787977. The reversal of 961787965 is 569787169.

It can be written as a sum of positive squares in 4 ways, for example, as 1965604 + 959822361 = 1402^2 + 30981^2 .

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

It is not a de Polignac number, because 961787965 - 2⁵ = 961787933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305716 + ... + 308845.

It is an arithmetic number, because the mean of its divisors is an integer number (144729351).

Almost surely, 2^961787965 is an apocalyptic number.

It is an amenable number.

961787965 is a deficient number, since it is larger than the sum of its proper divisors (196046843).

961787965 is a wasteful number, since it uses less digits than its factorization.

961787965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614879.

The product of its digits is 5715360, while the sum is 58.

The square root of 961787965 is about 31012.7065087844. The cubic root of 961787965 is about 987.0968805918.

The spelling of 961787965 in words is "nine hundred sixty-one million, seven hundred eighty-seven thousand, nine hundred sixty-five".