6115990 has 32 divisors (see below), whose sum is σ = 11531520. Its totient is φ = 2332800.

The previous prime is 6115979. The next prime is 6116009. The reversal of 6115990 is 995116.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33700 + ... + 33880.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^6115990 is an apocalyptic number.

6115990 is a deficient number, since it is larger than the sum of its proper divisors (5415530).

6115990 is a wasteful number, since it uses less digits than its factorization.

6115990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 6115990 is about 2473.0527693521. The cubic root of 6115990 is about 182.8755262512.

The spelling of 6115990 in words is "six million, one hundred fifteen thousand, nine hundred ninety".