695255664 has 80 divisors (see below), whose sum is σ = 1906083360. Its totient is φ = 217620480.

The previous prime is 695255663. The next prime is 695255669. The reversal of 695255664 is 466552596.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695255663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538732 + ... + 540020.

It is an arithmetic number, because the mean of its divisors is an integer number (23826042).

Almost surely, 2^695255664 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 695255664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953041680).

695255664 is an abundant number, since it is smaller than the sum of its proper divisors (1210827696).

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

695255664 is a wasteful number, since it uses less digits than its factorization.

695255664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978 (or 1972 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The square root of 695255664 is about 26367.7011512191. The cubic root of 695255664 is about 885.8934932363.

The spelling of 695255664 in words is "six hundred ninety-five million, two hundred fifty-five thousand, six hundred sixty-four".