451980623 has 16 divisors (see below), whose sum is σ = 468374400. Its totient is φ = 435929856.

The previous prime is 451980577. The next prime is 451980629. The reversal of 451980623 is 326089154.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 451980623 - 2⁶ = 451980559 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 (451980629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1631561 + ... + 1631837.

It is an arithmetic number, because the mean of its divisors is an integer number (29273400).

Almost surely, 2^451980623 is an apocalyptic number.

451980623 is a deficient number, since it is larger than the sum of its proper divisors (16393777).

451980623 is a wasteful number, since it uses less digits than its factorization.

451980623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 451980623 is about 21259.8359118785. The cubic root of 451980623 is about 767.4320610992.

The spelling of 451980623 in words is "four hundred fifty-one million, nine hundred eighty thousand, six hundred twenty-three".