64646027 has 2 divisors, whose sum is σ = 64646028. Its totient is φ = 64646026.

The previous prime is 64645979. The next prime is 64646033. The reversal of 64646027 is 72064646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64646027 - 2¹² = 64641931 is a prime.

It is not a weakly prime, because it can be changed into another prime (64646927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32323013 + 32323014.

It is an arithmetic number, because the mean of its divisors is an integer number (32323014).

Almost surely, 2^64646027 is an apocalyptic number.

64646027 is a deficient number, since it is larger than the sum of its proper divisors (1).

64646027 is an equidigital number, since it uses as much as digits as its factorization.

64646027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 64646027 is about 8040.2753062317. The cubic root of 64646027 is about 401.3413862623.

The spelling of 64646027 in words is "sixty-four million, six hundred forty-six thousand, twenty-seven".