166396598 has 4 divisors (see below), whose sum is σ = 249594900. Its totient is φ = 83198298.

The previous prime is 166396553. The next prime is 166396631. The reversal of 166396598 is 895693661.

166396598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 895693661 = 12899 ⋅69439.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41599148 + ... + 41599151.

It is an arithmetic number, because the mean of its divisors is an integer number (62398725).

Almost surely, 2^166396598 is an apocalyptic number.

166396598 is a deficient number, since it is larger than the sum of its proper divisors (83198302).

166396598 is an equidigital number, since it uses as much as digits as its factorization.

166396598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83198301.

The product of its digits is 2099520, while the sum is 53.

The square root of 166396598 is about 12899.4805321765. The cubic root of 166396598 is about 550.0237984193.

The spelling of 166396598 in words is "one hundred sixty-six million, three hundred ninety-six thousand, five hundred ninety-eight".