690954059 has 2 divisors, whose sum is σ = 690954060. Its totient is φ = 690954058.

The previous prime is 690954023. The next prime is 690954083. The reversal of 690954059 is 950459096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690954059 - 2²⁴ = 674176843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (690954359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345477029 + 345477030.

It is an arithmetic number, because the mean of its divisors is an integer number (345477030).

Almost surely, 2^690954059 is an apocalyptic number.

690954059 is a deficient number, since it is larger than the sum of its proper divisors (1).

690954059 is an equidigital number, since it uses as much as digits as its factorization.

690954059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 690954059 is about 26286.0050026625. The cubic root of 690954059 is about 884.0626798270.

The spelling of 690954059 in words is "six hundred ninety million, nine hundred fifty-four thousand, fifty-nine".