6542090 has 8 divisors (see below), whose sum is σ = 11775780. Its totient is φ = 2616832.

The previous prime is 6542089. The next prime is 6542101. The reversal of 6542090 is 902456.

It can be written as a sum of positive squares in 2 ways, for example, as 6295081 + 247009 = 2509^2 + 497^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327095 + ... + 327114.

Almost surely, 2^6542090 is an apocalyptic number.

6542090 is a deficient number, since it is larger than the sum of its proper divisors (5233690).

6542090 is a wasteful number, since it uses less digits than its factorization.

6542090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654216.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6542090 is about 2557.7509652036. The cubic root of 6542090 is about 187.0275155637.

It can be divided in two parts, 654 and 2090, that added together give a cube (2744 = 14³).

The spelling of 6542090 in words is "six million, five hundred forty-two thousand, ninety".