164998 has 4 divisors (see below), whose sum is σ = 247500. Its totient is φ = 82498.

The previous prime is 164987. The next prime is 164999. The reversal of 164998 is 899461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899461 = 23 ⋅39107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41248 + ... + 41251.

It is an arithmetic number, because the mean of its divisors is an integer number (61875).

2¹⁶⁴⁹⁹⁸ is an apocalyptic number.

164998 is a deficient number, since it is larger than the sum of its proper divisors (82502).

164998 is an equidigital number, since it uses as much as digits as its factorization.

164998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82501.

The product of its digits is 15552, while the sum is 37.

The square root of 164998 is about 406.1994583945. The cubic root of 164998 is about 54.8478439151.

The spelling of 164998 in words is "one hundred sixty-four thousand, nine hundred ninety-eight".