654278642 has 8 divisors (see below), whose sum is σ = 1033071600. Its totient is φ = 309921444.

The previous prime is 654278617. The next prime is 654278663. The reversal of 654278642 is 246872456.

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

It is a junction number, because it is equal to n+sod(n) for n = 654278593 and 654278602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8608892 + ... + 8608967.

It is an arithmetic number, because the mean of its divisors is an integer number (129133950).

Almost surely, 2^654278642 is an apocalyptic number.

654278642 is a deficient number, since it is larger than the sum of its proper divisors (378792958).

654278642 is a wasteful number, since it uses less digits than its factorization.

654278642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217880.

The product of its digits is 645120, while the sum is 44.

The square root of 654278642 is about 25578.8710071418. The cubic root of 654278642 is about 868.1356306211.

It can be divided in two parts, 6542 and 78642, that added together give a cube (85184 = 44³).

The spelling of 654278642 in words is "six hundred fifty-four million, two hundred seventy-eight thousand, six hundred forty-two".