13705998 has 16 divisors (see below), whose sum is σ = 27450576. Its totient is φ = 4562240.

The previous prime is 13705997. The next prime is 13706023. The reversal of 13705998 is 89950731.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13705997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5290 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (1715661).

Almost surely, 2^13705998 is an apocalyptic number.

13705998 is an abundant number, since it is smaller than the sum of its proper divisors (13744578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13705998 is a wasteful number, since it uses less digits than its factorization.

13705998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 13705998 is about 3702.1612606692. The cubic root of 13705998 is about 239.3151657562.

The spelling of 13705998 in words is "thirteen million, seven hundred five thousand, nine hundred ninety-eight".