11653998 has 16 divisors (see below), whose sum is σ = 24112080. Its totient is φ = 3750656.

The previous prime is 11653981. The next prime is 11654003. The reversal of 11653998 is 89935611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33315 + ... + 33662.

It is an arithmetic number, because the mean of its divisors is an integer number (1507005).

Almost surely, 2^11653998 is an apocalyptic number.

11653998 is an abundant number, since it is smaller than the sum of its proper divisors (12458082).

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

11653998 is a wasteful number, since it uses less digits than its factorization.

11653998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67011.

The product of its digits is 58320, while the sum is 42.

The square root of 11653998 is about 3413.7952486932. The cubic root of 11653998 is about 226.7209467275.

The spelling of 11653998 in words is "eleven million, six hundred fifty-three thousand, nine hundred ninety-eight".