345581712 has 360 divisors, whose sum is σ = 1237126176. Its totient is φ = 89413632.

The previous prime is 345581683. The next prime is 345581723. The reversal of 345581712 is 217185543.

345581712 is a `hidden beast` number, since 3 + 4 + 5 + 581 + 71 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5157903 + ... + 5157969.

Almost surely, 2^345581712 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 345581712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618563088).

345581712 is an abundant number, since it is smaller than the sum of its proper divisors (891544464).

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

345581712 is a wasteful number, since it uses less digits than its factorization.

345581712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 139 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 345581712 is about 18589.8281864034. The cubic root of 345581712 is about 701.7518786110.

The spelling of 345581712 in words is "three hundred forty-five million, five hundred eighty-one thousand, seven hundred twelve".