690011 has 4 divisors (see below), whose sum is σ = 788592. Its totient is φ = 591432.

The previous prime is 689987. The next prime is 690037. The reversal of 690011 is 110096.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690011 is a prime.

It is a super-2 number, since 2×690011² = 952230360242, which contains 22 as substring.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (690511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49280 + ... + 49293.

It is an arithmetic number, because the mean of its divisors is an integer number (197148).

2⁶⁹⁰⁰¹¹ is an apocalyptic number.

690011 is a deficient number, since it is larger than the sum of its proper divisors (98581).

690011 is an equidigital number, since it uses as much as digits as its factorization.

690011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98580.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 690011 is about 830.6690074873. The cubic root of 690011 is about 88.3660287970.

The spelling of 690011 in words is "six hundred ninety thousand, eleven".