206451464 has 16 divisors (see below), whose sum is σ = 400445100. Its totient is φ = 99666112.

The previous prime is 206451463. The next prime is 206451491. The reversal of 206451464 is 464154602.

It can be written as a sum of positive squares in 2 ways, for example, as 200448964 + 6002500 = 14158^2 + 2450^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206451464.

It is not an unprimeable number, because it can be changed into a prime (206451463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444707 + ... + 445170.

Almost surely, 2^206451464 is an apocalyptic number.

It is an amenable number.

206451464 is a deficient number, since it is larger than the sum of its proper divisors (193993636).

206451464 is a wasteful number, since it uses less digits than its factorization.

206451464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889912 (or 889908 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 206451464 is about 14368.4189805281. The cubic root of 206451464 is about 591.0251868603.

The spelling of 206451464 in words is "two hundred six million, four hundred fifty-one thousand, four hundred sixty-four".