2166674557 has 8 divisors (see below), whose sum is σ = 2281367360. Its totient is φ = 2052047520.

The previous prime is 2166674551. The next prime is 2166674581. The reversal of 2166674557 is 7554766612.

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 2166674557 - 2¹⁹ = 2166150269 is a prime.

It is a super-2 number, since 2×2166674557² = 9388957271902292498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166674557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166674551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60457 + ... + 89377.

It is an arithmetic number, because the mean of its divisors is an integer number (285170920).

Almost surely, 2^2166674557 is an apocalyptic number.

It is an amenable number.

2166674557 is a deficient number, since it is larger than the sum of its proper divisors (114692803).

2166674557 is a wasteful number, since it uses less digits than its factorization.

2166674557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32883.

The product of its digits is 2116800, while the sum is 49.

The square root of 2166674557 is about 46547.5515682619. The cubic root of 2166674557 is about 1293.9909168778.

The spelling of 2166674557 in words is "two billion, one hundred sixty-six million, six hundred seventy-four thousand, five hundred fifty-seven".