961277761 has 8 divisors (see below), whose sum is σ = 996811200. Its totient is φ = 925903440.

The previous prime is 961277749. The next prime is 961277803. The reversal of 961277761 is 167772169.

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 961277761 - 2⁷ = 961277633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961277741) by changing a digit.

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, 27405 + ... + 51706.

It is an arithmetic number, because the mean of its divisors is an integer number (124601400).

Almost surely, 2^961277761 is an apocalyptic number.

It is an amenable number.

961277761 is a deficient number, since it is larger than the sum of its proper divisors (35533439).

961277761 is a wasteful number, since it uses less digits than its factorization.

961277761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79559.

The product of its digits is 222264, while the sum is 46.

The square root of 961277761 is about 31004.4796924573. The cubic root of 961277761 is about 986.9223064742.

The spelling of 961277761 in words is "nine hundred sixty-one million, two hundred seventy-seven thousand, seven hundred sixty-one".