83660887 has 2 divisors, whose sum is σ = 83660888. Its totient is φ = 83660886.

The previous prime is 83660873. The next prime is 83660939. The reversal of 83660887 is 78806638.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83660887 - 2¹⁵ = 83628119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83660807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41830443 + 41830444.

It is an arithmetic number, because the mean of its divisors is an integer number (41830444).

Almost surely, 2^83660887 is an apocalyptic number.

83660887 is a deficient number, since it is larger than the sum of its proper divisors (1).

83660887 is an equidigital number, since it uses as much as digits as its factorization.

83660887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 83660887 is about 9146.6325497420. The cubic root of 83660887 is about 437.3617731486.

It can be divided in two parts, 8366088 and 7, that added together give a triangular number (8366095 = T₄₀₉₀).

The spelling of 83660887 in words is "eighty-three million, six hundred sixty thousand, eight hundred eighty-seven".