353427661 has 4 divisors (see below), whose sum is σ = 353516800. Its totient is φ = 353338524.

The previous prime is 353427647. The next prime is 353427673. The reversal of 353427661 is 166724353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166724353 = 613 ⋅271981.

It is a cyclic number.

It is not a de Polignac number, because 353427661 - 2⁵ = 353427629 is a prime.

It is a super-2 number, since 2×353427661² = 249822223119861842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 353427661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353427601) 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, 38331 + ... + 46648.

It is an arithmetic number, because the mean of its divisors is an integer number (88379200).

Almost surely, 2^353427661 is an apocalyptic number.

It is an amenable number.

353427661 is a deficient number, since it is larger than the sum of its proper divisors (89139).

353427661 is an equidigital number, since it uses as much as digits as its factorization.

353427661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89138.

The product of its digits is 90720, while the sum is 37.

The square root of 353427661 is about 18799.6718322422. The cubic root of 353427661 is about 707.0229515198.

The spelling of 353427661 in words is "three hundred fifty-three million, four hundred twenty-seven thousand, six hundred sixty-one".