83542687 has 2 divisors, whose sum is σ = 83542688. Its totient is φ = 83542686.

The previous prime is 83542663. The next prime is 83542691. The reversal of 83542687 is 78624538.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83542687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83540687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41771343 + 41771344.

It is an arithmetic number, because the mean of its divisors is an integer number (41771344).

Almost surely, 2^83542687 is an apocalyptic number.

83542687 is a deficient number, since it is larger than the sum of its proper divisors (1).

83542687 is an equidigital number, since it uses as much as digits as its factorization.

83542687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 83542687 is about 9140.1688715253. The cubic root of 83542687 is about 437.1557010368.

The spelling of 83542687 in words is "eighty-three million, five hundred forty-two thousand, six hundred eighty-seven".