6105990 has 32 divisors (see below), whose sum is σ = 15987456. Its totient is φ = 1480160.

The previous prime is 6105959. The next prime is 6105997. The reversal of 6105990 is 995016.

It is a super-2 number, since 2×6105990² = 74566227760200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6105997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8922 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (499608).

Almost surely, 2^6105990 is an apocalyptic number.

6105990 is an abundant number, since it is smaller than the sum of its proper divisors (9881466).

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

6105990 is a wasteful number, since it uses less digits than its factorization.

6105990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18524.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 6105990 is about 2471.0301495530. The cubic root of 6105990 is about 182.7758011658.

The spelling of 6105990 in words is "six million, one hundred five thousand, nine hundred ninety".