661458000704 has 28 divisors (see below), whose sum is σ = 1357842128100. Its totient is φ = 319324551168.

The previous prime is 661458000683. The next prime is 661458000713. The reversal of 661458000704 is 407000854166.

It can be written as a sum of positive squares in 2 ways, for example, as 165909582400 + 495548418304 = 407320^2 + 703952^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178192649 + ... + 178196360.

Almost surely, 2^661458000704 is an apocalyptic number.

661458000704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

661458000704 is an abundant number, since it is smaller than the sum of its proper divisors (696384127396).

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

661458000704 is a wasteful number, since it uses less digits than its factorization.

661458000704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356389050 (or 356389040 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 661458000704 in words is "six hundred sixty-one billion, four hundred fifty-eight million, seven hundred four", and thus it is an aban number.