6432691 has 2 divisors, whose sum is σ = 6432692. Its totient is φ = 6432690.

The previous prime is 6432649. The next prime is 6432707. The reversal of 6432691 is 1962346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6432691 - 2⁷ = 6432563 is a prime.

It is not a weakly prime, because it can be changed into another prime (6432611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216345 + 3216346.

It is an arithmetic number, because the mean of its divisors is an integer number (3216346).

Almost surely, 2^6432691 is an apocalyptic number.

6432691 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432691 is an equidigital number, since it uses as much as digits as its factorization.

6432691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 6432691 is about 2536.2750245192. The cubic root of 6432691 is about 185.9791378305.

The spelling of 6432691 in words is "six million, four hundred thirty-two thousand, six hundred ninety-one".