455120644 has 24 divisors (see below), whose sum is σ = 874633536. Its totient is φ = 205500000.

The previous prime is 455120621. The next prime is 455120647. The reversal of 455120644 is 446021554.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (455120647) 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 7 ways as a sum of consecutive naturals, for example, 27607 + ... + 40894.

It is an arithmetic number, because the mean of its divisors is an integer number (36443064).

Almost surely, 2^455120644 is an apocalyptic number.

455120644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

455120644 is a deficient number, since it is larger than the sum of its proper divisors (419512892).

455120644 is a wasteful number, since it uses less digits than its factorization.

455120644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68667 (or 68665 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 455120644 is about 21333.5567592467. The cubic root of 455120644 is about 769.2051414200.

The spelling of 455120644 in words is "four hundred fifty-five million, one hundred twenty thousand, six hundred forty-four".