654056785 has 4 divisors (see below), whose sum is σ = 784868148. Its totient is φ = 523245424.

The previous prime is 654056783. The next prime is 654056797. The reversal of 654056785 is 587650456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248598289 + 405458496 = 15767^2 + 20136^2 .

It is a cyclic number.

It is not a de Polignac number, because 654056785 - 2¹ = 654056783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654056783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65405674 + ... + 65405683.

It is an arithmetic number, because the mean of its divisors is an integer number (196217037).

Almost surely, 2^654056785 is an apocalyptic number.

It is an amenable number.

654056785 is a deficient number, since it is larger than the sum of its proper divisors (130811363).

654056785 is a wasteful number, since it uses less digits than its factorization.

654056785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130811362.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The square root of 654056785 is about 25574.5339155966. The cubic root of 654056785 is about 868.0374951948.

The spelling of 654056785 in words is "six hundred fifty-four million, fifty-six thousand, seven hundred eighty-five".