697068180 has 60 divisors (see below), whose sum is σ = 2186733780. Its totient is φ = 185884416.

The previous prime is 697068173. The next prime is 697068209. The reversal of 697068180 is 81860796.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117029124 + 580039056 = 10818^2 + 24084^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 213525 + ... + 216764.

It is an arithmetic number, because the mean of its divisors is an integer number (36445563).

Almost surely, 2^697068180 is an apocalyptic number.

697068180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

697068180 is an abundant number, since it is smaller than the sum of its proper divisors (1489665600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697068180 is a wasteful number, since it uses less digits than its factorization.

697068180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430310 (or 430299 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 697068180 is about 26402.0487841379. The cubic root of 697068180 is about 886.6626600783.

The spelling of 697068180 in words is "six hundred ninety-seven million, sixty-eight thousand, one hundred eighty".