670343400 has 72 divisors (see below), whose sum is σ = 2251242630. Its totient is φ = 178757760.

The previous prime is 670343357. The next prime is 670343407. The reversal of 670343400 is 4343076.

670343400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 361076004 + 309267396 = 19002^2 + 17586^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (670343407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 184407 + ... + 188006.

Almost surely, 2^670343400 is an apocalyptic number.

670343400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670343400 is an abundant number, since it is smaller than the sum of its proper divisors (1580899230).

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

670343400 is a wasteful number, since it uses less digits than its factorization.

670343400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372435 (or 372423 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 670343400 is about 25890.9907110562. The cubic root of 670343400 is about 875.1834826105.

Adding to 670343400 its reverse (4343076), we get a palindrome (674686476).

The spelling of 670343400 in words is "six hundred seventy million, three hundred forty-three thousand, four hundred".