166437397 has 8 divisors (see below), whose sum is σ = 200225600. Its totient is φ = 135152064.

The previous prime is 166437373. The next prime is 166437413. The reversal of 166437397 is 793734661.

166437397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 166437397 - 2¹¹ = 166435349 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 (166437307) 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, 625572 + ... + 625837.

It is an arithmetic number, because the mean of its divisors is an integer number (25028200).

Almost surely, 2^166437397 is an apocalyptic number.

It is an amenable number.

166437397 is a deficient number, since it is larger than the sum of its proper divisors (33788203).

166437397 is a wasteful number, since it uses less digits than its factorization.

166437397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251435.

The product of its digits is 571536, while the sum is 46.

The square root of 166437397 is about 12901.0618555218. The cubic root of 166437397 is about 550.0687484311.

The spelling of 166437397 in words is "one hundred sixty-six million, four hundred thirty-seven thousand, three hundred ninety-seven".