354655681 has 4 divisors (see below), whose sum is σ = 359514052. Its totient is φ = 349797312.

The previous prime is 354655669. The next prime is 354655733. The reversal of 354655681 is 186556453.

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

It can be written as a sum of positive squares in 2 ways, for example, as 231800625 + 122855056 = 15225^2 + 11084^2 .

It is not a de Polignac number, because 354655681 - 2¹⁵ = 354622913 is a prime.

It is a super-2 number, since 2×354655681² = 251561304131147522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354655601) 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, 2429076 + ... + 2429221.

It is an arithmetic number, because the mean of its divisors is an integer number (89878513).

Almost surely, 2^354655681 is an apocalyptic number.

It is an amenable number.

354655681 is a deficient number, since it is larger than the sum of its proper divisors (4858371).

354655681 is an equidigital number, since it uses as much as digits as its factorization.

354655681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858370.

The product of its digits is 432000, while the sum is 43.

The square root of 354655681 is about 18832.3041872204. The cubic root of 354655681 is about 707.8408790747.

The spelling of 354655681 in words is "three hundred fifty-four million, six hundred fifty-five thousand, six hundred eighty-one".