64935887 has 2 divisors, whose sum is σ = 64935888. Its totient is φ = 64935886.

The previous prime is 64935881. The next prime is 64935907. The reversal of 64935887 is 78853946.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64935887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64935881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32467943 + 32467944.

It is an arithmetic number, because the mean of its divisors is an integer number (32467944).

Almost surely, 2^64935887 is an apocalyptic number.

64935887 is a deficient number, since it is larger than the sum of its proper divisors (1).

64935887 is an equidigital number, since it uses as much as digits as its factorization.

64935887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 64935887 is about 8058.2806478802. The cubic root of 64935887 is about 401.9403370941.

The spelling of 64935887 in words is "sixty-four million, nine hundred thirty-five thousand, eight hundred eighty-seven".