3511998 has 80 divisors (see below), whose sum is σ = 9525120. Its totient is φ = 944784.

The previous prime is 3511993. The next prime is 3511999. The reversal of 3511998 is 8991153.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3511993) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21465 + ... + 21627.

It is an arithmetic number, because the mean of its divisors is an integer number (119064).

Almost surely, 2^3511998 is an apocalyptic number.

3511998 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3511998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4762560).

3511998 is an abundant number, since it is smaller than the sum of its proper divisors (6013122).

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

3511998 is a wasteful number, since it uses less digits than its factorization.

3511998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 194 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 3511998 is about 1874.0325504110. The cubic root of 3511998 is about 152.0027411786.

The spelling of 3511998 in words is "three million, five hundred eleven thousand, nine hundred ninety-eight".