654668401464 has 672 divisors, whose sum is σ = 2424057148800. Its totient is φ = 160512503040.

The previous prime is 654668401447. The next prime is 654668401493. The reversal of 654668401464 is 464104866456.

654668401464 is a `hidden beast` number, since 6 + 546 + 6 + 84 + 0 + 14 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 654668401464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 2363423694 + ... + 2363423970.

It is an arithmetic number, because the mean of its divisors is an integer number (3607227900).

Almost surely, 2^654668401464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654668401464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212028574400).

654668401464 is an abundant number, since it is smaller than the sum of its proper divisors (1769388747336).

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

654668401464 is a wasteful number, since it uses less digits than its factorization.

654668401464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 654668401464 in words is "six hundred fifty-four billion, six hundred sixty-eight million, four hundred one thousand, four hundred sixty-four".