961777071 has 10 divisors (see below), whose sum is σ = 1436728832. Its totient is φ = 641184660.

The previous prime is 961777067. The next prime is 961777079. The reversal of 961777071 is 170777169.

It is not a de Polignac number, because 961777071 - 2² = 961777067 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 (961777079) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5936815 + ... + 5936976.

Almost surely, 2^961777071 is an apocalyptic number.

961777071 is a deficient number, since it is larger than the sum of its proper divisors (474951761).

961777071 is a wasteful number, since it uses less digits than its factorization.

961777071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873803 (or 11873794 counting only the distinct ones).

The product of its (nonzero) digits is 129654, while the sum is 45.

The square root of 961777071 is about 31012.5308706013. The cubic root of 961777071 is about 987.0931536878.

The spelling of 961777071 in words is "nine hundred sixty-one million, seven hundred seventy-seven thousand, seventy-one".