695278642 has 4 divisors (see below), whose sum is σ = 1042917966. Its totient is φ = 347639320.

The previous prime is 695278621. The next prime is 695278643. The reversal of 695278642 is 246872596.

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

It can be written as a sum of positive squares in only one way, i.e., 692689761 + 2588881 = 26319^2 + 1609^2 .

It is not an unprimeable number, because it can be changed into a prime (695278643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173819659 + ... + 173819662.

Almost surely, 2^695278642 is an apocalyptic number.

695278642 is a deficient number, since it is larger than the sum of its proper divisors (347639324).

695278642 is a wasteful number, since it uses less digits than its factorization.

695278642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347639323.

The product of its digits is 1451520, while the sum is 49.

The square root of 695278642 is about 26368.1368700938. The cubic root of 695278642 is about 885.9032526373.

The spelling of 695278642 in words is "six hundred ninety-five million, two hundred seventy-eight thousand, six hundred forty-two".