654809090 has 48 divisors (see below), whose sum is σ = 1295569728. Its totient is φ = 238125888.

The previous prime is 654809083. The next prime is 654809101. The reversal of 654809090 is 90908456.

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 23 ways as a sum of consecutive naturals, for example, 110339 + ... + 116121.

It is an arithmetic number, because the mean of its divisors is an integer number (26991036).

Almost surely, 2^654809090 is an apocalyptic number.

654809090 is a deficient number, since it is larger than the sum of its proper divisors (640760638).

654809090 is a wasteful number, since it uses less digits than its factorization.

654809090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883 (or 5870 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 654809090 is about 25589.2377768467. The cubic root of 654809090 is about 868.3701771823.

The spelling of 654809090 in words is "six hundred fifty-four million, eight hundred nine thousand, ninety".