670553442 has 96 divisors (see below), whose sum is σ = 1646976240. Its totient is φ = 195747840.

The previous prime is 670553417. The next prime is 670553447. The reversal of 670553442 is 244355076.

670553442 is a `hidden beast` number, since 67 + 0 + 553 + 4 + 42 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 169286121 + 501267321 = 13011^2 + 22389^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670553397 and 670553406.

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 47 ways as a sum of consecutive naturals, for example, 354034 + ... + 355922.

Almost surely, 2^670553442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670553442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823488120).

670553442 is an abundant number, since it is smaller than the sum of its proper divisors (976422798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670553442 is a wasteful number, since it uses less digits than its factorization.

670553442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 670553442 is about 25895.0466691991. The cubic root of 670553442 is about 875.2748815824.

The spelling of 670553442 in words is "six hundred seventy million, five hundred fifty-three thousand, four hundred forty-two".