332623661 has 4 divisors (see below), whose sum is σ = 332857212. Its totient is φ = 332390112.

The previous prime is 332623657. The next prime is 332623699. The reversal of 332623661 is 166326233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166326233 = 71 ⋅2342623.

It can be written as a sum of positive squares in 2 ways, for example, as 218005225 + 114618436 = 14765^2 + 10706^2 .

It is a cyclic number.

It is not a de Polignac number, because 332623661 - 2² = 332623657 is a prime.

It is a super-2 number, since 2×332623661² = 221276999714085842, 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 (332623561) 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, 114626 + ... + 117491.

It is an arithmetic number, because the mean of its divisors is an integer number (83214303).

Almost surely, 2^332623661 is an apocalyptic number.

It is an amenable number.

332623661 is a deficient number, since it is larger than the sum of its proper divisors (233551).

332623661 is a wasteful number, since it uses less digits than its factorization.

332623661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233550.

The product of its digits is 23328, while the sum is 32.

The square root of 332623661 is about 18237.9730507532. The cubic root of 332623661 is about 692.8688654227.

Adding to 332623661 its reverse (166326233), we get a palindrome (498949894).

The spelling of 332623661 in words is "three hundred thirty-two million, six hundred twenty-three thousand, six hundred sixty-one".