695653980 has 144 divisors (see below), whose sum is σ = 2282305536. Its totient is φ = 157852800.

The previous prime is 695653979. The next prime is 695654017. The reversal of 695653980 is 89356596.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 443157 + ... + 444723.

It is an arithmetic number, because the mean of its divisors is an integer number (15849344).

Almost surely, 2^695653980 is an apocalyptic number.

695653980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 695653980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141152768).

695653980 is an abundant number, since it is smaller than the sum of its proper divisors (1586651556).

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

695653980 is a wasteful number, since it uses less digits than its factorization.

695653980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 695653980 is about 26375.2531741403. The cubic root of 695653980 is about 886.0626387781.

The spelling of 695653980 in words is "six hundred ninety-five million, six hundred fifty-three thousand, nine hundred eighty".