690585299 has 4 divisors (see below), whose sum is σ = 691958736. Its totient is φ = 689211864.

The previous prime is 690585277. The next prime is 690585341. The reversal of 690585299 is 992585096.

It is a happy number.

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 690585299 - 2¹⁶ = 690519763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690585299.

It is not an unprimeable number, because it can be changed into a prime (690585199) 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 in 3 ways as a sum of consecutive naturals, for example, 685964 + ... + 686969.

It is an arithmetic number, because the mean of its divisors is an integer number (172989684).

Almost surely, 2^690585299 is an apocalyptic number.

690585299 is a deficient number, since it is larger than the sum of its proper divisors (1373437).

690585299 is a wasteful number, since it uses less digits than its factorization.

690585299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373436.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The square root of 690585299 is about 26278.9896875812. The cubic root of 690585299 is about 883.9053780194.

The spelling of 690585299 in words is "six hundred ninety million, five hundred eighty-five thousand, two hundred ninety-nine".