6426729 has 32 divisors (see below), whose sum is σ = 10137600. Its totient is φ = 4015440.

The previous prime is 6426713. The next prime is 6426757. The reversal of 6426729 is 9276246.

It is a happy number.

6426729 is a `hidden beast` number, since 642 + 6 + 7 + 2 + 9 = 666.

It is not a de Polignac number, because 6426729 - 2⁴ = 6426713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6426693 and 6426702.

It is not an unprimeable number, because it can be changed into a prime (6426229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48994 + ... + 49124.

It is an arithmetic number, because the mean of its divisors is an integer number (316800).

Almost surely, 2^6426729 is an apocalyptic number.

6426729 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6426729 is a deficient number, since it is larger than the sum of its proper divisors (3710871).

6426729 is a wasteful number, since it uses less digits than its factorization.

6426729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 6426729 is about 2535.0994063350. The cubic root of 6426729 is about 185.9216631617.

The spelling of 6426729 in words is "six million, four hundred twenty-six thousand, seven hundred twenty-nine".