6115644 has 36 divisors (see below), whose sum is σ = 16274440. Its totient is φ = 1931040.

The previous prime is 6115643. The next prime is 6115661. The reversal of 6115644 is 4465116.

6115644 is a `hidden beast` number, since 6 + 1 + 15 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6115644² = 74802203069472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6115643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3787 + ... + 5154.

Almost surely, 2^6115644 is an apocalyptic number.

It is an amenable number.

6115644 is an abundant number, since it is smaller than the sum of its proper divisors (10158796).

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

6115644 is a wasteful number, since it uses less digits than its factorization.

6115644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970 (or 8965 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 6115644 is about 2472.9828143358. The cubic root of 6115644 is about 182.8720775795.

The spelling of 6115644 in words is "six million, one hundred fifteen thousand, six hundred forty-four".