6729427 has 2 divisors, whose sum is σ = 6729428. Its totient is φ = 6729426.

The previous prime is 6729419. The next prime is 6729461. The reversal of 6729427 is 7249276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6729427 - 2³ = 6729419 is a prime.

It is equal to p₄₅₉₃₉₇ and since 6729427 and 459397 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6729487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364713 + 3364714.

It is an arithmetic number, because the mean of its divisors is an integer number (3364714).

Almost surely, 2^6729427 is an apocalyptic number.

6729427 is a deficient number, since it is larger than the sum of its proper divisors (1).

6729427 is an equidigital number, since it uses as much as digits as its factorization.

6729427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 6729427 is about 2594.1139142297. The cubic root of 6729427 is about 188.7959594528.

The spelling of 6729427 in words is "six million, seven hundred twenty-nine thousand, four hundred twenty-seven".