64340963 has 2 divisors, whose sum is σ = 64340964. Its totient is φ = 64340962.

The previous prime is 64340953. The next prime is 64340987. The reversal of 64340963 is 36904346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64340963 - 2²² = 60146659 is a prime.

It is not a weakly prime, because it can be changed into another prime (64340933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32170481 + 32170482.

It is an arithmetic number, because the mean of its divisors is an integer number (32170482).

Almost surely, 2^64340963 is an apocalyptic number.

64340963 is a deficient number, since it is larger than the sum of its proper divisors (1).

64340963 is an equidigital number, since it uses as much as digits as its factorization.

64340963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 64340963 is about 8021.2818800987. The cubic root of 64340963 is about 400.7090818479.

The spelling of 64340963 in words is "sixty-four million, three hundred forty thousand, nine hundred sixty-three".