690960 has 40 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 184192.

The previous prime is 690953. The next prime is 690997. The reversal of 690960 is 69096.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

690960 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2⁶⁹⁰⁹⁶⁰ is an apocalyptic number.

690960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

690960 is an abundant number, since it is smaller than the sum of its proper divisors (1451760).

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

690960 is a wasteful number, since it uses less digits than its factorization.

690960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 690960 is about 831.2400375343. The cubic root of 690960 is about 88.4065213619.

690960 divided by its sum of digits (30) gives a palindrome (23032).

The spelling of 690960 in words is "six hundred ninety thousand, nine hundred sixty".