166738601 has 8 divisors (see below), whose sum is σ = 179034624. Its totient is φ = 154719040.

The previous prime is 166738597. The next prime is 166738631. The reversal of 166738601 is 106837661.

166738601 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 not a de Polignac number, because 166738601 - 2² = 166738597 is a prime.

It is a super-2 number, since 2×166738601² = 55603522126874402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166738631) 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, 67865 + ... + 70278.

It is an arithmetic number, because the mean of its divisors is an integer number (22379328).

Almost surely, 2^166738601 is an apocalyptic number.

It is an amenable number.

166738601 is a deficient number, since it is larger than the sum of its proper divisors (12296023).

166738601 is a wasteful number, since it uses less digits than its factorization.

166738601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138231.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166738601 is about 12912.7301915590. The cubic root of 166738601 is about 550.4003707396.

The spelling of 166738601 in words is "one hundred sixty-six million, seven hundred thirty-eight thousand, six hundred one".