661334346 has 96 divisors (see below), whose sum is σ = 1533482496. Its totient is φ = 205632000.

The previous prime is 661334327. The next prime is 661334369. The reversal of 661334346 is 643433166.

661334346 is a `hidden beast` number, since 6 + 613 + 3 + 4 + 34 + 6 = 666.

661334346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 661334346.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3134181 + ... + 3134391.

It is an arithmetic number, because the mean of its divisors is an integer number (15973776).

Almost surely, 2^661334346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 661334346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766741248).

661334346 is an abundant number, since it is smaller than the sum of its proper divisors (872148150).

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

661334346 is a wasteful number, since it uses less digits than its factorization.

661334346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 425 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 661334346 is about 25716.4217184273. The cubic root of 661334346 is about 871.2451216426.

The spelling of 661334346 in words is "six hundred sixty-one million, three hundred thirty-four thousand, three hundred forty-six".