32780705 has 12 divisors (see below), whose sum is σ = 40437180. Its totient is φ = 25510464.

The previous prime is 32780669. The next prime is 32780707. The reversal of 32780705 is 50708723.

32780705 = 4048² + 4049².

It can be written as a sum of positive squares in 6 ways, for example, as 506944 + 32273761 = 712^2 + 5681^2 .

It is not a de Polignac number, because 32780705 - 2¹⁸ = 32518561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32780707) 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, 4451 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (3369765).

Almost surely, 2^32780705 is an apocalyptic number.

32780705 is the 4049-th centered square number.

It is an amenable number.

32780705 is a deficient number, since it is larger than the sum of its proper divisors (7656475).

32780705 is an equidigital number, since it uses as much as digits as its factorization.

32780705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 32780705 is about 5725.4436509322. The cubic root of 32780705 is about 320.0413520779.

The spelling of 32780705 in words is "thirty-two million, seven hundred eighty thousand, seven hundred five".