532661661 has 12 divisors (see below), whose sum is σ = 879314592. Its totient is φ = 304378056.

The previous prime is 532661641. The next prime is 532661681. The reversal of 532661661 is 166166235.

532661661 is a `hidden beast` number, since 5 + 32 + 6 + 616 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (532661641) and next prime (532661681).

It is not a de Polignac number, because 532661661 - 2⁹ = 532661149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532661621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4227411 + ... + 4227536.

It is an arithmetic number, because the mean of its divisors is an integer number (73276216).

Almost surely, 2^532661661 is an apocalyptic number.

It is an amenable number.

532661661 is a deficient number, since it is larger than the sum of its proper divisors (346652931).

532661661 is a wasteful number, since it uses less digits than its factorization.

532661661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8454960 (or 8454957 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 532661661 is about 23079.4640535694. The cubic root of 532661661 is about 810.6196858286.

The spelling of 532661661 in words is "five hundred thirty-two million, six hundred sixty-one thousand, six hundred sixty-one".