83766091 has 2 divisors, whose sum is σ = 83766092. Its totient is φ = 83766090.

The previous prime is 83766049. The next prime is 83766101. The reversal of 83766091 is 19066738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83766091 - 2⁷ = 83765963 is a prime.

It is not a weakly prime, because it can be changed into another prime (83766491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41883045 + 41883046.

It is an arithmetic number, because the mean of its divisors is an integer number (41883046).

Almost surely, 2^83766091 is an apocalyptic number.

83766091 is a deficient number, since it is larger than the sum of its proper divisors (1).

83766091 is an equidigital number, since it uses as much as digits as its factorization.

83766091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 83766091 is about 9152.3817118824. The cubic root of 83766091 is about 437.5450245907.

The spelling of 83766091 in words is "eighty-three million, seven hundred sixty-six thousand, ninety-one".