971066811 has 16 divisors (see below), whose sum is σ = 1521112320. Its totient is φ = 543253920.

The previous prime is 971066797. The next prime is 971066821. The reversal of 971066811 is 118660179.

It is not a de Polignac number, because 971066811 - 2⁵ = 971066779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 971066811.

It is not an unprimeable number, because it can be changed into a prime (971066821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131351 + ... + 1132208.

It is an arithmetic number, because the mean of its divisors is an integer number (95069520).

Almost surely, 2^971066811 is an apocalyptic number.

971066811 is a deficient number, since it is larger than the sum of its proper divisors (550045509).

971066811 is a wasteful number, since it uses less digits than its factorization.

971066811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263586.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 971066811 is about 31161.9449168373. The cubic root of 971066811 is about 990.2610647085.

The spelling of 971066811 in words is "nine hundred seventy-one million, sixty-six thousand, eight hundred eleven".