6156993 has 4 divisors (see below), whose sum is σ = 8209328. Its totient is φ = 4104660.

The previous prime is 6156989. The next prime is 6157001. The reversal of 6156993 is 3996516.

6156993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6156993 - 2² = 6156989 is a prime.

It is a D-number.

It is a Duffinian number.

6156993 is a lucky number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (6156923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026163 + ... + 1026168.

It is an arithmetic number, because the mean of its divisors is an integer number (2052332).

Almost surely, 2^6156993 is an apocalyptic number.

It is an amenable number.

6156993 is a deficient number, since it is larger than the sum of its proper divisors (2052335).

6156993 is a wasteful number, since it uses less digits than its factorization.

6156993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052334.

The product of its digits is 43740, while the sum is 39.

The square root of 6156993 is about 2481.3288778395. The cubic root of 6156993 is about 183.2832961701.

The spelling of 6156993 in words is "six million, one hundred fifty-six thousand, nine hundred ninety-three".