6154639 has 4 divisors (see below), whose sum is σ = 6422256. Its totient is φ = 5887024.

The previous prime is 6154627. The next prime is 6154649. The reversal of 6154639 is 9364516.

6154639 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.

It is a cyclic number.

It is not a de Polignac number, because 6154639 - 2¹⁹ = 5630351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6154619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133774 + ... + 133819.

It is an arithmetic number, because the mean of its divisors is an integer number (1605564).

Almost surely, 2^6154639 is an apocalyptic number.

6154639 is a deficient number, since it is larger than the sum of its proper divisors (267617).

6154639 is a wasteful number, since it uses less digits than its factorization.

6154639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267616.

The product of its digits is 19440, while the sum is 34.

The square root of 6154639 is about 2480.8544898885. The cubic root of 6154639 is about 183.2599349895.

The spelling of 6154639 in words is "six million, one hundred fifty-four thousand, six hundred thirty-nine".