695205949 has 4 divisors (see below), whose sum is σ = 695627164. Its totient is φ = 694784736.

The previous prime is 695205947. The next prime is 695205961. The reversal of 695205949 is 949502596.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 440580100 + 254625849 = 20990^2 + 15957^2 .

It is a cyclic number.

It is not a de Polignac number, because 695205949 - 2¹ = 695205947 is a prime.

It is a super-2 number, since 2×695205949² = 966622623049981202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695205941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208122 + ... + 211435.

It is an arithmetic number, because the mean of its divisors is an integer number (173906791).

Almost surely, 2^695205949 is an apocalyptic number.

It is an amenable number.

695205949 is a deficient number, since it is larger than the sum of its proper divisors (421215).

695205949 is a wasteful number, since it uses less digits than its factorization.

695205949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421214.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 695205949 is about 26366.7584090271. The cubic root of 695205949 is about 885.8723771457.

The spelling of 695205949 in words is "six hundred ninety-five million, two hundred five thousand, nine hundred forty-nine".