6906554 has 4 divisors (see below), whose sum is σ = 10359834. Its totient is φ = 3453276.

The previous prime is 6906551. The next prime is 6906569. The reversal of 6906554 is 4556096.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6620329 + 286225 = 2573^2 + 535^2 .

It is not an unprimeable number, because it can be changed into a prime (6906551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1726637 + ... + 1726640.

Almost surely, 2^6906554 is an apocalyptic number.

6906554 is a deficient number, since it is larger than the sum of its proper divisors (3453280).

6906554 is a wasteful number, since it uses less digits than its factorization.

6906554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453279.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 6906554 is about 2628.0323437888. The cubic root of 6906554 is about 190.4380842362.

The spelling of 6906554 in words is "six million, nine hundred six thousand, five hundred fifty-four".