83290687 has 2 divisors, whose sum is σ = 83290688. Its totient is φ = 83290686.

The previous prime is 83290679. The next prime is 83290693. The reversal of 83290687 is 78609238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83290687 - 2³ = 83290679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83290637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41645343 + 41645344.

It is an arithmetic number, because the mean of its divisors is an integer number (41645344).

Almost surely, 2^83290687 is an apocalyptic number.

83290687 is a deficient number, since it is larger than the sum of its proper divisors (1).

83290687 is an equidigital number, since it uses as much as digits as its factorization.

83290687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 83290687 is about 9126.3731569556. The cubic root of 83290687 is about 436.7157096468.

It can be divided in two parts, 832 and 90687, that added together give a palindrome (91519).

The spelling of 83290687 in words is "eighty-three million, two hundred ninety thousand, six hundred eighty-seven".