64633087 has 2 divisors, whose sum is σ = 64633088. Its totient is φ = 64633086.

The previous prime is 64633081. The next prime is 64633123. The reversal of 64633087 is 78033646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64633087 - 2²³ = 56244479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64633081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32316543 + 32316544.

It is an arithmetic number, because the mean of its divisors is an integer number (32316544).

Almost surely, 2^64633087 is an apocalyptic number.

64633087 is a deficient number, since it is larger than the sum of its proper divisors (1).

64633087 is an equidigital number, since it uses as much as digits as its factorization.

64633087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64633087 is about 8039.4705671456. The cubic root of 64633087 is about 401.3146060443.

It can be divided in two parts, 646 and 33087, that added together give a palindrome (33733).

The spelling of 64633087 in words is "sixty-four million, six hundred thirty-three thousand, eighty-seven".