766122161 has 16 divisors (see below), whose sum is σ = 922521600. Its totient is φ = 621526608.

The previous prime is 766122151. The next prime is 766122173. The reversal of 766122161 is 161221667.

It is a cyclic number.

It is not a de Polignac number, because 766122161 - 2¹⁰ = 766121137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (766122101) 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, 189386 + ... + 193388.

It is an arithmetic number, because the mean of its divisors is an integer number (57657600).

Almost surely, 2^766122161 is an apocalyptic number.

It is an amenable number.

766122161 is a deficient number, since it is larger than the sum of its proper divisors (156399439).

766122161 is a wasteful number, since it uses less digits than its factorization.

766122161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468.

The product of its digits is 6048, while the sum is 32.

The square root of 766122161 is about 27678.9118463859. The cubic root of 766122161 is about 915.0243997992.

The spelling of 766122161 in words is "seven hundred sixty-six million, one hundred twenty-two thousand, one hundred sixty-one".