640060062648 has 64 divisors (see below), whose sum is σ = 1708552707840. Its totient is φ = 199331134464.

The previous prime is 640060062617. The next prime is 640060062667. The reversal of 640060062648 is 846260060046.

640060062648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13459161 + ... + 13506632.

It is an arithmetic number, because the mean of its divisors is an integer number (26696136060).

Almost surely, 2^640060062648 is an apocalyptic number.

It is an amenable number.

640060062648 is an abundant number, since it is smaller than the sum of its proper divisors (1068492645192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640060062648 is a wasteful number, since it uses less digits than its factorization.

640060062648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26965868 (or 26965864 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 640060062648 in words is "six hundred forty billion, sixty million, sixty-two thousand, six hundred forty-eight".