83632981 has 2 divisors, whose sum is σ = 83632982. Its totient is φ = 83632980.

The previous prime is 83632973. The next prime is 83633021. The reversal of 83632981 is 18923638.

It is an a-pointer prime, because the next prime (83633021) can be obtained adding 83632981 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51710481 + 31922500 = 7191^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 83632981 - 2³ = 83632973 is a prime.

It is a super-2 number, since 2×83632981² = 13988951021892722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83632181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41816490 + 41816491.

It is an arithmetic number, because the mean of its divisors is an integer number (41816491).

Almost surely, 2^83632981 is an apocalyptic number.

It is an amenable number.

83632981 is a deficient number, since it is larger than the sum of its proper divisors (1).

83632981 is an equidigital number, since it uses as much as digits as its factorization.

83632981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 83632981 is about 9145.1069430598. The cubic root of 83632981 is about 437.3131388131.

The spelling of 83632981 in words is "eighty-three million, six hundred thirty-two thousand, nine hundred eighty-one".