345406860 has 72 divisors (see below), whose sum is σ = 1049966736. Its totient is φ = 91912320.

The previous prime is 345406823. The next prime is 345406879. The reversal of 345406860 is 68604543.

345406860 is a `hidden beast` number, since 34 + 540 + 6 + 86 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95607 + ... + 99153.

Almost surely, 2^345406860 is an apocalyptic number.

345406860 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 345406860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524983368).

345406860 is an abundant number, since it is smaller than the sum of its proper divisors (704559876).

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

345406860 is a wasteful number, since it uses less digits than its factorization.

345406860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 345406860 is about 18585.1246969182. The cubic root of 345406860 is about 701.6335048512.

The spelling of 345406860 in words is "three hundred forty-five million, four hundred six thousand, eight hundred sixty".