6890642 has 8 divisors (see below), whose sum is σ = 11275632. Its totient is φ = 3132100.

The previous prime is 6890641. The next prime is 6890651. The reversal of 6890642 is 2460986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (6890641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156584 + ... + 156627.

It is an arithmetic number, because the mean of its divisors is an integer number (1409454).

Almost surely, 2^6890642 is an apocalyptic number.

6890642 is a deficient number, since it is larger than the sum of its proper divisors (4384990).

6890642 is a wasteful number, since it uses less digits than its factorization.

6890642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313224.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 6890642 is about 2625.0032380932. The cubic root of 6890642 is about 190.2917217661.

The spelling of 6890642 in words is "six million, eight hundred ninety thousand, six hundred forty-two".