64663627 has 4 divisors (see below), whose sum is σ = 73901296. Its totient is φ = 55425960.

The previous prime is 64663607. The next prime is 64663637. The reversal of 64663627 is 72636646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72636646 = 2 ⋅36318323.

It is a cyclic number.

It is not a de Polignac number, because 64663627 - 2¹⁵ = 64630859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64663627.

It is not an unprimeable number, because it can be changed into a prime (64663607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4618824 + ... + 4618837.

It is an arithmetic number, because the mean of its divisors is an integer number (18475324).

Almost surely, 2^64663627 is an apocalyptic number.

64663627 is a deficient number, since it is larger than the sum of its proper divisors (9237669).

64663627 is an equidigital number, since it uses as much as digits as its factorization.

64663627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9237668.

The product of its digits is 217728, while the sum is 40.

The square root of 64663627 is about 8041.3697216332. The cubic root of 64663627 is about 401.3778049348.

The spelling of 64663627 in words is "sixty-four million, six hundred sixty-three thousand, six hundred twenty-seven".