690597959 has 4 divisors (see below), whose sum is σ = 726945240. Its totient is φ = 654250680.

The previous prime is 690597923. The next prime is 690597961. The reversal of 690597959 is 959795096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690597959 - 2⁸ = 690597703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690597898 and 690597907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690597979) 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 3 ways as a sum of consecutive naturals, for example, 18173612 + ... + 18173649.

It is an arithmetic number, because the mean of its divisors is an integer number (181736310).

Almost surely, 2^690597959 is an apocalyptic number.

690597959 is a deficient number, since it is larger than the sum of its proper divisors (36347281).

690597959 is a wasteful number, since it uses less digits than its factorization.

690597959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36347280.

The product of its (nonzero) digits is 6889050, while the sum is 59.

The square root of 690597959 is about 26279.2305633175. The cubic root of 690597959 is about 883.9107793187.

The spelling of 690597959 in words is "six hundred ninety million, five hundred ninety-seven thousand, nine hundred fifty-nine".