690950 has 24 divisors (see below), whose sum is σ = 1385328. Its totient is φ = 254880.

The previous prime is 690929. The next prime is 690953. The reversal of 690950 is 59096.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690953) by changing a digit.

690950 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (57722).

2⁶⁹⁰⁹⁵⁰ is an apocalyptic number.

690950 is an abundant number, since it is smaller than the sum of its proper divisors (694378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690950 is a wasteful number, since it uses less digits than its factorization.

690950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 690950 is about 831.2340224028. The cubic root of 690950 is about 88.4060948686.

The spelling of 690950 in words is "six hundred ninety thousand, nine hundred fifty".