648420585574 has 4 divisors (see below), whose sum is σ = 972630878364. Its totient is φ = 324210292786.

The previous prime is 648420585551. The next prime is 648420585577. The reversal of 648420585574 is 475585024846.

648420585574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×648420585574² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648420585577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162105146392 + ... + 162105146395.

It is an arithmetic number, because the mean of its divisors is an integer number (243157719591).

Almost surely, 2^648420585574 is an apocalyptic number.

648420585574 is a deficient number, since it is larger than the sum of its proper divisors (324210292790).

648420585574 is a wasteful number, since it uses less digits than its factorization.

648420585574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324210292789.

The product of its (nonzero) digits is 43008000, while the sum is 58.

The spelling of 648420585574 in words is "six hundred forty-eight billion, four hundred twenty million, five hundred eighty-five thousand, five hundred seventy-four".