6451633 has 2 divisors, whose sum is σ = 6451634. Its totient is φ = 6451632.

The previous prime is 6451609. The next prime is 6451649. The reversal of 6451633 is 3361546.

6451633 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6265009 + 186624 = 2503^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451633 - 2⁹ = 6451121 is a prime.

It is not a weakly prime, because it can be changed into another prime (6451033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225816 + 3225817.

It is an arithmetic number, because the mean of its divisors is an integer number (3225817).

Almost surely, 2^6451633 is an apocalyptic number.

It is an amenable number.

6451633 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451633 is an equidigital number, since it uses as much as digits as its factorization.

6451633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 6451633 is about 2540.0064960547. The cubic root of 6451633 is about 186.1615065394.

It can be divided in two parts, 645 and 1633, that added together give a triangular number (2278 = T₆₇).

The spelling of 6451633 in words is "six million, four hundred fifty-one thousand, six hundred thirty-three".