3640451 has 2 divisors, whose sum is σ = 3640452. Its totient is φ = 3640450.

The previous prime is 3640447. The next prime is 3640471. The reversal of 3640451 is 1540463.

It is a happy number.

3640451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3640451 - 2² = 3640447 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3640471) 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, 1820225 + 1820226.

It is an arithmetic number, because the mean of its divisors is an integer number (1820226).

Almost surely, 2^3640451 is an apocalyptic number.

3640451 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640451 is an equidigital number, since it uses as much as digits as its factorization.

3640451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3640451 is about 1907.9965932884. The cubic root of 3640451 is about 153.8337864866.

The spelling of 3640451 in words is "three million, six hundred forty thousand, four hundred fifty-one".