346656660 has 192 divisors, whose sum is σ = 1146421248. Its totient is φ = 76640256.

The previous prime is 346656659. The next prime is 346656677. The reversal of 346656660 is 66656643.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2729517 + ... + 2729643.

It is an arithmetic number, because the mean of its divisors is an integer number (5970944).

Almost surely, 2^346656660 is an apocalyptic number.

346656660 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 346656660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573210624).

346656660 is an abundant number, since it is smaller than the sum of its proper divisors (799764588).

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

346656660 is a wasteful number, since it uses less digits than its factorization.

346656660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The square root of 346656660 is about 18618.7180009796. The cubic root of 346656660 is about 702.4787361167.

The spelling of 346656660 in words is "three hundred forty-six million, six hundred fifty-six thousand, six hundred sixty".