695638945 has 8 divisors (see below), whose sum is σ = 837942336. Its totient is φ = 554394096.

The previous prime is 695638943. The next prime is 695638991. The reversal of 695638945 is 549836596.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 695638945 - 2¹ = 695638943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (695638943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263187 + ... + 265816.

It is an arithmetic number, because the mean of its divisors is an integer number (104742792).

Almost surely, 2^695638945 is an apocalyptic number.

It is an amenable number.

695638945 is a deficient number, since it is larger than the sum of its proper divisors (142303391).

695638945 is a wasteful number, since it uses less digits than its factorization.

695638945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529271.

The product of its digits is 6998400, while the sum is 55.

The square root of 695638945 is about 26374.9681516395. The cubic root of 695638945 is about 886.0562553135.

The spelling of 695638945 in words is "six hundred ninety-five million, six hundred thirty-eight thousand, nine hundred forty-five".