690086 has 8 divisors (see below), whose sum is σ = 1038960. Its totient is φ = 343768.

The previous prime is 690073. The next prime is 690089. The reversal of 690086 is 680096.

690086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (129870).

2⁶⁹⁰⁰⁸⁶ is an apocalyptic number.

690086 is a deficient number, since it is larger than the sum of its proper divisors (348874).

690086 is a wasteful number, since it uses less digits than its factorization.

690086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 690086 is about 830.7141505957. The cubic root of 690086 is about 88.3692302977.

The spelling of 690086 in words is "six hundred ninety thousand, eighty-six".