332161661 has 8 divisors (see below), whose sum is σ = 358544760. Its totient is φ = 305897472.

The previous prime is 332161651. The next prime is 332161703. The reversal of 332161661 is 166161233.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1612900 + 330548761 = 1270^2 + 18181^2 .

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 332161661 - 2⁶ = 332161597 is a prime.

It is a super-2 number, since 2×332161661² = 220662738076557842, 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 (332161631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23876 + ... + 35133.

It is an arithmetic number, because the mean of its divisors is an integer number (44818095).

Almost surely, 2^332161661 is an apocalyptic number.

It is an amenable number.

332161661 is a deficient number, since it is larger than the sum of its proper divisors (26383099).

332161661 is a wasteful number, since it uses less digits than its factorization.

332161661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59455.

The product of its digits is 3888, while the sum is 29.

The square root of 332161661 is about 18225.3027684042. The cubic root of 332161661 is about 692.5479284078.

The spelling of 332161661 in words is "three hundred thirty-two million, one hundred sixty-one thousand, six hundred sixty-one".