6662257161 has 16 divisors (see below), whose sum is σ = 10210698624. Its totient is φ = 3784996224.

The previous prime is 6662257139. The next prime is 6662257171. The reversal of 6662257161 is 1617522666.

It is not a de Polignac number, because 6662257161 - 2¹³ = 6662248969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6662257171) 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, 913276 + ... + 920541.

It is an arithmetic number, because the mean of its divisors is an integer number (638168664).

Almost surely, 2^6662257161 is an apocalyptic number.

It is an amenable number.

6662257161 is a deficient number, since it is larger than the sum of its proper divisors (3548441463).

6662257161 is a wasteful number, since it uses less digits than its factorization.

6662257161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834000.

The product of its digits is 181440, while the sum is 42.

The square root of 6662257161 is about 81622.6510289883. The cubic root of 6662257161 is about 1881.6570158719.

The spelling of 6662257161 in words is "six billion, six hundred sixty-two million, two hundred fifty-seven thousand, one hundred sixty-one".