345605652 has 72 divisors (see below), whose sum is σ = 1012147136. Its totient is φ = 97386624.

The previous prime is 345605647. The next prime is 345605669. The reversal of 345605652 is 256506543.

It is a happy number.

345605652 is a `hidden beast` number, since 3 + 45 + 605 + 6 + 5 + 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9003 + ... + 27789.

Almost surely, 2^345605652 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 345605652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506073568).

345605652 is an abundant number, since it is smaller than the sum of its proper divisors (666541484).

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

345605652 is a wasteful number, since it uses less digits than its factorization.

345605652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18877 (or 18872 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 345605652 is about 18590.4720757704. The cubic root of 345605652 is about 701.7680827401.

The spelling of 345605652 in words is "three hundred forty-five million, six hundred five thousand, six hundred fifty-two".