32643961 has 16 divisors (see below), whose sum is σ = 40780800. Its totient is φ = 25482240.

The previous prime is 32643943. The next prime is 32643977. The reversal of 32643961 is 16934623.

It is a happy number.

It is not a de Polignac number, because 32643961 - 2⁵ = 32643929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32643161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 736 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (2548800).

Almost surely, 2^32643961 is an apocalyptic number.

32643961 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32643961 is a deficient number, since it is larger than the sum of its proper divisors (8136839).

32643961 is a wasteful number, since it uses less digits than its factorization.

32643961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8904.

The product of its digits is 23328, while the sum is 34.

The square root of 32643961 is about 5713.4893891562. The cubic root of 32643961 is about 319.5957166630.

It can be divided in two parts, 3264 and 3961, that added together give a square (7225 = 85²).

The spelling of 32643961 in words is "thirty-two million, six hundred forty-three thousand, nine hundred sixty-one".