354665643 has 4 divisors (see below), whose sum is σ = 472887528. Its totient is φ = 236443760.

The previous prime is 354665627. The next prime is 354665657. The reversal of 354665643 is 346566453.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 354665643 - 2⁴ = 354665627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 354665595 and 354665604.

It is not an unprimeable number, because it can be changed into a prime (354664643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59110938 + ... + 59110943.

It is an arithmetic number, because the mean of its divisors is an integer number (118221882).

Almost surely, 2^354665643 is an apocalyptic number.

354665643 is a deficient number, since it is larger than the sum of its proper divisors (118221885).

354665643 is a wasteful number, since it uses less digits than its factorization.

354665643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118221884.

The product of its digits is 777600, while the sum is 42.

The square root of 354665643 is about 18832.5686776924. The cubic root of 354665643 is about 707.8475065777.

The spelling of 354665643 in words is "three hundred fifty-four million, six hundred sixty-five thousand, six hundred forty-three".