695042591 has 4 divisors (see below), whose sum is σ = 731623800. Its totient is φ = 658461384.

The previous prime is 695042567. The next prime is 695042653. The reversal of 695042591 is 195240596.

695042591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 695042591 - 2¹⁴ = 695026207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695042531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18290576 + ... + 18290613.

It is an arithmetic number, because the mean of its divisors is an integer number (182905950).

Almost surely, 2^695042591 is an apocalyptic number.

695042591 is a deficient number, since it is larger than the sum of its proper divisors (36581209).

695042591 is a wasteful number, since it uses less digits than its factorization.

695042591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36581208.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 695042591 is about 26363.6604249107. The cubic root of 695042591 is about 885.8029849144.

The spelling of 695042591 in words is "six hundred ninety-five million, forty-two thousand, five hundred ninety-one".