56998 has 4 divisors (see below), whose sum is σ = 85500. Its totient is φ = 28498.

The previous prime is 56993. The next prime is 56999. The reversal of 56998 is 89965.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56993) by changing a digit.

56998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14248 + ... + 14251.

It is an arithmetic number, because the mean of its divisors is an integer number (21375).

2⁵⁶⁹⁹⁸ is an apocalyptic number.

56998 is a deficient number, since it is larger than the sum of its proper divisors (28502).

56998 is a wasteful number, since it uses less digits than its factorization.

56998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28501.

The product of its digits is 19440, while the sum is 37.

The square root of 56998 is about 238.7425391504. The cubic root of 56998 is about 38.4845611904.

The spelling of 56998 in words is "fifty-six thousand, nine hundred ninety-eight".