695666880 has 140 divisors (see below), whose sum is σ = 2474701680. Its totient is φ = 185504256.

The previous prime is 695666861. The next prime is 695666887. The reversal of 695666880 is 88666596.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (695666887) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12501 + ... + 39339.

Almost surely, 2^695666880 is an apocalyptic number.

695666880 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 695666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237350840).

695666880 is an abundant number, since it is smaller than the sum of its proper divisors (1779034800).

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

695666880 is a wasteful number, since it uses less digits than its factorization.

695666880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26868 (or 26849 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 695666880 is about 26375.4977204223. The cubic root of 695666880 is about 886.0681157047.

The spelling of 695666880 in words is "six hundred ninety-five million, six hundred sixty-six thousand, eight hundred eighty".