6690061 has 12 divisors (see below), whose sum is σ = 8124448. Its totient is φ = 5395392.

The previous prime is 6690059. The next prime is 6690067. The reversal of 6690061 is 1600966.

It is a happy number.

It is not a de Polignac number, because 6690061 - 2¹ = 6690059 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370 + ... + 3676.

Almost surely, 2^6690061 is an apocalyptic number.

It is an amenable number.

6690061 is a deficient number, since it is larger than the sum of its proper divisors (1434387).

6690061 is a wasteful number, since it uses less digits than its factorization.

6690061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3331 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6690061 is about 2586.5152232299. The cubic root of 6690061 is about 188.4270978704.

The spelling of 6690061 in words is "six million, six hundred ninety thousand, sixty-one".