361423661 has 4 divisors (see below), whose sum is σ = 366818112. Its totient is φ = 356029212.

The previous prime is 361423631. The next prime is 361423663. The reversal of 361423661 is 166324163.

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: 166324163 = 239 ⋅695917.

It is a cyclic number.

It is not a de Polignac number, because 361423661 - 2¹⁰ = 361422637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361423663) 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, 2697125 + ... + 2697258.

It is an arithmetic number, because the mean of its divisors is an integer number (91704528).

Almost surely, 2^361423661 is an apocalyptic number.

It is an amenable number.

361423661 is a deficient number, since it is larger than the sum of its proper divisors (5394451).

361423661 is an equidigital number, since it uses as much as digits as its factorization.

361423661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5394450.

The product of its digits is 15552, while the sum is 32.

The square root of 361423661 is about 19011.1457045597. The cubic root of 361423661 is about 712.3151701142.

The spelling of 361423661 in words is "three hundred sixty-one million, four hundred twenty-three thousand, six hundred sixty-one".