206674357465 has 24 divisors (see below), whose sum is σ = 270576677592. Its totient is φ = 151407820800.

The previous prime is 206674357433. The next prime is 206674357523. The reversal of 206674357465 is 564753476602.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 6790254409 + 199884103056 = 82403^2 + 447084^2 .

It is not a de Polignac number, because 206674357465 - 2⁵ = 206674357433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1879336 + ... + 1986265.

It is an arithmetic number, because the mean of its divisors is an integer number (11274028233).

Almost surely, 2^206674357465 is an apocalyptic number.

It is an amenable number.

206674357465 is a deficient number, since it is larger than the sum of its proper divisors (63902320127).

206674357465 is a wasteful number, since it uses less digits than its factorization.

206674357465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865677 (or 3865660 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 55.

The spelling of 206674357465 in words is "two hundred six billion, six hundred seventy-four million, three hundred fifty-seven thousand, four hundred sixty-five".