690893859 has 8 divisors (see below), whose sum is σ = 946089040. Its totient is φ = 448147296.

The previous prime is 690893851. The next prime is 690893867. The reversal of 690893859 is 958398096.

It is an interprime number because it is at equal distance from previous prime (690893851) and next prime (690893867).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 690893859 - 2³ = 690893851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690893799 and 690893808.

It is not an unprimeable number, because it can be changed into a prime (690893851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3112024 + ... + 3112245.

It is an arithmetic number, because the mean of its divisors is an integer number (118261130).

Almost surely, 2^690893859 is an apocalyptic number.

690893859 is a deficient number, since it is larger than the sum of its proper divisors (255195181).

690893859 is a wasteful number, since it uses less digits than its factorization.

690893859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224309.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 690893859 is about 26284.8598816885. The cubic root of 690893859 is about 884.0370041600.

The spelling of 690893859 in words is "six hundred ninety million, eight hundred ninety-three thousand, eight hundred fifty-nine".