6742591 has 4 divisors (see below), whose sum is σ = 7139232. Its totient is φ = 6345952.

The previous prime is 6742577. The next prime is 6742643. The reversal of 6742591 is 1952476.

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 6742591 - 2⁵ = 6742559 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 (6742091) 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, 198295 + ... + 198328.

It is an arithmetic number, because the mean of its divisors is an integer number (1784808).

Almost surely, 2^6742591 is an apocalyptic number.

6742591 is a deficient number, since it is larger than the sum of its proper divisors (396641).

6742591 is a wasteful number, since it uses less digits than its factorization.

6742591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396640.

The product of its digits is 15120, while the sum is 34.

The square root of 6742591 is about 2596.6499571563. The cubic root of 6742591 is about 188.9189858360.

The spelling of 6742591 in words is "six million, seven hundred forty-two thousand, five hundred ninety-one".