654706646 has 8 divisors (see below), whose sum is σ = 1071338184. Its totient is φ = 297593920.

The previous prime is 654706631. The next prime is 654706667. The reversal of 654706646 is 646607456.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 654706597 and 654706606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14879675 + ... + 14879718.

It is an arithmetic number, because the mean of its divisors is an integer number (133917273).

Almost surely, 2^654706646 is an apocalyptic number.

654706646 is a deficient number, since it is larger than the sum of its proper divisors (416631538).

654706646 is a wasteful number, since it uses less digits than its factorization.

654706646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29759406.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 654706646 is about 25587.2359976610. The cubic root of 654706646 is about 868.3248897057.

The spelling of 654706646 in words is "six hundred fifty-four million, seven hundred six thousand, six hundred forty-six".