695980 has 48 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 247808.

The previous prime is 695939. The next prime is 695999. The reversal of 695980 is 89596.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

695980 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7776 + ... + 7864.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2⁶⁹⁵⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 695980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816480).

695980 is an abundant number, since it is smaller than the sum of its proper divisors (936980).

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

695980 is a wasteful number, since it uses less digits than its factorization.

695980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 695980 is about 834.2541579159. The cubic root of 695980 is about 88.6201035660.

The spelling of 695980 in words is "six hundred ninety-five thousand, nine hundred eighty".