654420786 has 48 divisors (see below), whose sum is σ = 1381670784. Its totient is φ = 206559808.

The previous prime is 654420769. The next prime is 654420869. The reversal of 654420786 is 687024456.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266215 + ... + 268661.

It is an arithmetic number, because the mean of its divisors is an integer number (28784808).

Almost surely, 2^654420786 is an apocalyptic number.

654420786 is an abundant number, since it is smaller than the sum of its proper divisors (727249998).

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

654420786 is a wasteful number, since it uses less digits than its factorization.

654420786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 654420786 is about 25581.6493995207. The cubic root of 654420786 is about 868.1984944265.

It can be divided in two parts, 65 and 4420786, that added together give a triangular number (4420851 = T₂₉₇₃).

The spelling of 654420786 in words is "six hundred fifty-four million, four hundred twenty thousand, seven hundred eighty-six".