670553444 has 18 divisors (see below), whose sum is σ = 1289846502. Its totient is φ = 304796800.

The previous prime is 670553417. The next prime is 670553447. The reversal of 670553444 is 444355076.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 498628900 + 171924544 = 22330^2 + 13112^2 .

It is a super-2 number, since 2×670553444² = 899283842520522272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 670553398 and 670553407.

It is not an unprimeable number, because it can be changed into a prime (670553447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 692237 + ... + 693204.

It is an arithmetic number, because the mean of its divisors is an integer number (71658139).

Almost surely, 2^670553444 is an apocalyptic number.

It is an amenable number.

670553444 is a deficient number, since it is larger than the sum of its proper divisors (619293058).

670553444 is a wasteful number, since it uses less digits than its factorization.

670553444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385467 (or 1385454 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 38.

The square root of 670553444 is about 25895.0467078165. The cubic root of 670553444 is about 875.2748824526.

The spelling of 670553444 in words is "six hundred seventy million, five hundred fifty-three thousand, four hundred forty-four".