354218805 has 64 divisors (see below), whose sum is σ = 667180800. Its totient is φ = 177811200.

The previous prime is 354218779. The next prime is 354218807. The reversal of 354218805 is 508812453.

It is a happy number.

It is not a de Polignac number, because 354218805 - 2⁵ = 354218773 is a prime.

It is a super-3 number, since 3×354218805³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 354218805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354218807) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 504955 + ... + 505655.

It is an arithmetic number, because the mean of its divisors is an integer number (10424700).

Almost surely, 2^354218805 is an apocalyptic number.

It is an amenable number.

354218805 is a deficient number, since it is larger than the sum of its proper divisors (312961995).

354218805 is a wasteful number, since it uses less digits than its factorization.

354218805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 354218805 is about 18820.7015012725. The cubic root of 354218805 is about 707.5501127793.

The spelling of 354218805 in words is "three hundred fifty-four million, two hundred eighteen thousand, eight hundred five".