32878861 has 2 divisors, whose sum is σ = 32878862. Its totient is φ = 32878860.

The previous prime is 32878841. The next prime is 32878877. The reversal of 32878861 is 16887823.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 10929636 = 4685^2 + 3306^2 .

It is an emirp because it is prime and its reverse (16887823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32878861 - 2²³ = 24490253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32878841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16439430 + 16439431.

It is an arithmetic number, because the mean of its divisors is an integer number (16439431).

Almost surely, 2^32878861 is an apocalyptic number.

It is an amenable number.

32878861 is a deficient number, since it is larger than the sum of its proper divisors (1).

32878861 is an equidigital number, since it uses as much as digits as its factorization.

32878861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The square root of 32878861 is about 5734.0091559048. The cubic root of 32878861 is about 320.3604694416.

The spelling of 32878861 in words is "thirty-two million, eight hundred seventy-eight thousand, eight hundred sixty-one".