6426749 has 8 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 5457456.

The previous prime is 6426713. The next prime is 6426757. The reversal of 6426749 is 9476246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6426749 - 2²⁰ = 5378173 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 (6426149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3449 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^6426749 is an apocalyptic number.

It is an amenable number.

6426749 is a deficient number, since it is larger than the sum of its proper divisors (986371).

6426749 is a wasteful number, since it uses less digits than its factorization.

6426749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539.

The product of its digits is 72576, while the sum is 38.

The square root of 6426749 is about 2535.1033509504. The cubic root of 6426749 is about 185.9218560244.

The spelling of 6426749 in words is "six million, four hundred twenty-six thousand, seven hundred forty-nine".