697590085 has 4 divisors (see below), whose sum is σ = 837108108. Its totient is φ = 558072064.

The previous prime is 697590071. The next prime is 697590107. The reversal of 697590085 is 580095796.

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 545783044 + 151807041 = 23362^2 + 12321^2 .

It is a cyclic number.

It is not a de Polignac number, because 697590085 - 2¹⁷ = 697459013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69759004 + ... + 69759013.

It is an arithmetic number, because the mean of its divisors is an integer number (209277027).

Almost surely, 2^697590085 is an apocalyptic number.

It is an amenable number.

697590085 is a deficient number, since it is larger than the sum of its proper divisors (139518023).

697590085 is a wasteful number, since it uses less digits than its factorization.

697590085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139518022.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 697590085 is about 26411.9307321521. The cubic root of 697590085 is about 886.8838905818.

The spelling of 697590085 in words is "six hundred ninety-seven million, five hundred ninety thousand, eighty-five".