306898 has 4 divisors (see below), whose sum is σ = 460350. Its totient is φ = 153448.

The previous prime is 306893. The next prime is 306899. The reversal of 306898 is 898603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898603 = 17 ⋅52859.

It can be written as a sum of positive squares in only one way, i.e., 305809 + 1089 = 553^2 + 33^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (306893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76723 + ... + 76726.

2³⁰⁶⁸⁹⁸ is an apocalyptic number.

306898 is a deficient number, since it is larger than the sum of its proper divisors (153452).

306898 is a wasteful number, since it uses less digits than its factorization.

306898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153451.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 306898 is about 553.9837542744. The cubic root of 306898 is about 67.4524951531.

The spelling of 306898 in words is "three hundred six thousand, eight hundred ninety-eight".