6690051 has 6 divisors (see below), whose sum is σ = 9663420. Its totient is φ = 4460028.

The previous prime is 6690029. The next prime is 6690059. The reversal of 6690051 is 1500966.

It is not a de Polignac number, because 6690051 - 2¹⁵ = 6657283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6689997 and 6690024.

It is not an unprimeable number, because it can be changed into a prime (6690059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371661 + ... + 371678.

It is an arithmetic number, because the mean of its divisors is an integer number (1610570).

Almost surely, 2^6690051 is an apocalyptic number.

6690051 is a deficient number, since it is larger than the sum of its proper divisors (2973369).

6690051 is a wasteful number, since it uses less digits than its factorization.

6690051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743345 (or 743342 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 6690051 is about 2586.5132901263. The cubic root of 6690051 is about 188.4270039862.

The spelling of 6690051 in words is "six million, six hundred ninety thousand, fifty-one".