6670056420 has 108 divisors (see below), whose sum is σ = 21492828084. Its totient is φ = 1674040320.

The previous prime is 6670056401. The next prime is 6670056431. The reversal of 6670056420 is 246500766.

6670056420 is a `hidden beast` number, since 6 + 6 + 7 + 0 + 0 + 5 + 642 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 313502436 + 6356553984 = 17706^2 + 79728^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12091 + ... + 116130.

Almost surely, 2^6670056420 is an apocalyptic number.

6670056420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6670056420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10746414042).

6670056420 is an abundant number, since it is smaller than the sum of its proper divisors (14822771664).

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

6670056420 is a wasteful number, since it uses less digits than its factorization.

6670056420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128270 (or 128248 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 6670056420 is about 81670.4133698367. The cubic root of 6670056420 is about 1882.3909917144.

The spelling of 6670056420 in words is "six billion, six hundred seventy million, fifty-six thousand, four hundred twenty".