670422720 has 112 divisors (see below), whose sum is σ = 2322137088. Its totient is φ = 162524160.

The previous prime is 670422719. The next prime is 670422737. The reversal of 670422720 is 27224076.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 21184 + ... + 42303.

Almost surely, 2^670422720 is an apocalyptic number.

670422720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670422720 is an abundant number, since it is smaller than the sum of its proper divisors (1651714368).

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

670422720 is a wasteful number, since it uses less digits than its factorization.

670422720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63518 (or 63508 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 670422720 is about 25892.5224727140. The cubic root of 670422720 is about 875.2180006480.

Adding to 670422720 its reverse (27224076), we get a palindrome (697646796).

The spelling of 670422720 in words is "six hundred seventy million, four hundred twenty-two thousand, seven hundred twenty".