340566660 has 288 divisors, whose sum is σ = 1258669440. Its totient is φ = 76204800.

The previous prime is 340566649. The next prime is 340566683. The reversal of 340566660 is 66665043.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1613955 + ... + 1614165.

It is an arithmetic number, because the mean of its divisors is an integer number (4370380).

Almost surely, 2^340566660 is an apocalyptic number.

340566660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340566660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629334720).

340566660 is an abundant number, since it is smaller than the sum of its proper divisors (918102780).

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

340566660 is a wasteful number, since it uses less digits than its factorization.

340566660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 340566660 is about 18454.4482442581. The cubic root of 340566660 is about 698.3407366961.

The spelling of 340566660 in words is "three hundred forty million, five hundred sixty-six thousand, six hundred sixty".