371343661 has 8 divisors (see below), whose sum is σ = 406465304. Its totient is φ = 337158720.

The previous prime is 371343659. The next prime is 371343667. The reversal of 371343661 is 166343173.

It can be written as a sum of positive squares in 4 ways, for example, as 62252100 + 309091561 = 7890^2 + 17581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 371343661 - 2¹ = 371343659 is a prime.

It is a super-2 number, since 2×371343661² = 275792229129765842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (371343667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233346 + ... + 234931.

It is an arithmetic number, because the mean of its divisors is an integer number (50808163).

Almost surely, 2^371343661 is an apocalyptic number.

It is an amenable number.

371343661 is a deficient number, since it is larger than the sum of its proper divisors (35121643).

371343661 is a wasteful number, since it uses less digits than its factorization.

371343661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468351.

The product of its digits is 27216, while the sum is 34.

The square root of 371343661 is about 19270.2792143757. The cubic root of 371343661 is about 718.7734137704.

It can be divided in two parts, 3713 and 43661, that added together give a palindrome (47374).

The spelling of 371343661 in words is "three hundred seventy-one million, three hundred forty-three thousand, six hundred sixty-one".