69898 has 4 divisors (see below), whose sum is σ = 104850. Its totient is φ = 34948.

The previous prime is 69877. The next prime is 69899. The reversal of 69898 is 89896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69169 + 729 = 263^2 + 27^2 .

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 69898.

It is not an unprimeable number, because it can be changed into a prime (69899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17473 + ... + 17476.

2⁶⁹⁸⁹⁸ is an apocalyptic number.

69898 is a deficient number, since it is larger than the sum of its proper divisors (34952).

69898 is a wasteful number, since it uses less digits than its factorization.

69898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34951.

The product of its digits is 31104, while the sum is 40.

The square root of 69898 is about 264.3822989536. The cubic root of 69898 is about 41.1928255959.

The spelling of 69898 in words is "sixty-nine thousand, eight hundred ninety-eight".