610742540664 has 24 divisors (see below), whose sum is σ = 1654094381160. Its totient is φ = 203580846864.

The previous prime is 610742540659. The next prime is 610742540671. The reversal of 610742540664 is 466045247016.

610742540664 is a `hidden beast` number, since 6 + 1 + 0 + 7 + 42 + 540 + 6 + 64 = 666.

610742540664 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4241267572 + ... + 4241267715.

It is an arithmetic number, because the mean of its divisors is an integer number (68920599215).

Almost surely, 2^610742540664 is an apocalyptic number.

It is an amenable number.

610742540664 is an abundant number, since it is smaller than the sum of its proper divisors (1043351840496).

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

610742540664 is a wasteful number, since it uses less digits than its factorization.

610742540664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482535299 (or 8482535292 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 610742540664 in words is "six hundred ten billion, seven hundred forty-two million, five hundred forty thousand, six hundred sixty-four".