64430651 has 2 divisors, whose sum is σ = 64430652. Its totient is φ = 64430650.

The previous prime is 64430633. The next prime is 64430657. The reversal of 64430651 is 15603446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64430651 - 2¹⁴ = 64414267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64430657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32215325 + 32215326.

It is an arithmetic number, because the mean of its divisors is an integer number (32215326).

Almost surely, 2^64430651 is an apocalyptic number.

64430651 is a deficient number, since it is larger than the sum of its proper divisors (1).

64430651 is an equidigital number, since it uses as much as digits as its factorization.

64430651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 64430651 is about 8026.8705608101. The cubic root of 64430651 is about 400.8951846997.

The spelling of 64430651 in words is "sixty-four million, four hundred thirty thousand, six hundred fifty-one".