6661970 has 32 divisors (see below), whose sum is σ = 14428800. Its totient is φ = 2163456.

The previous prime is 6661957. The next prime is 6661987. The reversal of 6661970 is 791666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 6661970.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175 + ... + 3834.

It is an arithmetic number, because the mean of its divisors is an integer number (450900).

Almost surely, 2^6661970 is an apocalyptic number.

6661970 is an abundant number, since it is smaller than the sum of its proper divisors (7766830).

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

6661970 is a wasteful number, since it uses less digits than its factorization.

6661970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6661970 is about 2581.0792316394. The cubic root of 6661970 is about 188.1629980676.

The spelling of 6661970 in words is "six million, six hundred sixty-one thousand, nine hundred seventy".