648442627 has 24 divisors (see below), whose sum is σ = 779883120. Its totient is φ = 537284160.

The previous prime is 648442609. The next prime is 648442631. The reversal of 648442627 is 726244846.

It is not a de Polignac number, because 648442627 - 2¹¹ = 648440579 is a prime.

It is a super-2 number, since 2×648442627² = 840955681021322258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648442607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174513 + ... + 178189.

It is an arithmetic number, because the mean of its divisors is an integer number (32495130).

Almost surely, 2^648442627 is an apocalyptic number.

648442627 is a deficient number, since it is larger than the sum of its proper divisors (131440493).

648442627 is a wasteful number, since it uses less digits than its factorization.

648442627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811 (or 3804 counting only the distinct ones).

The product of its digits is 516096, while the sum is 43.

The square root of 648442627 is about 25464.5366539429. The cubic root of 648442627 is about 865.5467277721.

The spelling of 648442627 in words is "six hundred forty-eight million, four hundred forty-two thousand, six hundred twenty-seven".