654236490 has 16 divisors (see below), whose sum is σ = 1570167648. Its totient is φ = 174463056.

The previous prime is 654236437. The next prime is 654236497. The reversal of 654236490 is 94632456.

It is not an unprimeable number, because it can be changed into a prime (654236497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10903912 + ... + 10903971.

It is an arithmetic number, because the mean of its divisors is an integer number (98135478).

Almost surely, 2^654236490 is an apocalyptic number.

654236490 is an abundant number, since it is smaller than the sum of its proper divisors (915931158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654236490 is a wasteful number, since it uses less digits than its factorization.

654236490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21807893.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 654236490 is about 25578.0470325629. The cubic root of 654236490 is about 868.1169869645.

The spelling of 654236490 in words is "six hundred fifty-four million, two hundred thirty-six thousand, four hundred ninety".