961566782 has 16 divisors (see below), whose sum is σ = 1656288000. Its totient is φ = 414071640.

The previous prime is 961566761. The next prime is 961566787. The reversal of 961566782 is 287665169.

It is a super-2 number, since 2×961566782² = 1849221352491671048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 961566782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961566787) 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, 1149782 + ... + 1150617.

It is an arithmetic number, because the mean of its divisors is an integer number (103518000).

Almost surely, 2^961566782 is an apocalyptic number.

961566782 is a deficient number, since it is larger than the sum of its proper divisors (694721218).

961566782 is a wasteful number, since it uses less digits than its factorization.

961566782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300431.

The product of its digits is 1088640, while the sum is 50.

The square root of 961566782 is about 31009.1402976606. The cubic root of 961566782 is about 987.0212070213.

The spelling of 961566782 in words is "nine hundred sixty-one million, five hundred sixty-six thousand, seven hundred eighty-two".