695642253408 has 240 divisors, whose sum is σ = 2140818316560. Its totient is φ = 221355224064.

The previous prime is 695642253403. The next prime is 695642253409. The reversal of 695642253408 is 804352246596.

695642253408 is a `hidden beast` number, since 6 + 9 + 5 + 6 + 4 + 225 + 3 + 408 = 666.

It is a super-2 number, since 2×695642253408² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695642253403) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 5014483 + ... + 5151341.

It is an arithmetic number, because the mean of its divisors is an integer number (8920076319).

Almost surely, 2^695642253408 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 695642253408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070409158280).

695642253408 is an abundant number, since it is smaller than the sum of its proper divisors (1445176063152).

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

695642253408 is a wasteful number, since it uses less digits than its factorization.

695642253408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136971 (or 136954 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 695642253408 in words is "six hundred ninety-five billion, six hundred forty-two million, two hundred fifty-three thousand, four hundred eight".