655670705 has 16 divisors (see below), whose sum is σ = 841186944. Its totient is φ = 488881920.

The previous prime is 655670693. The next prime is 655670707. The reversal of 655670705 is 507076556.

It is not a de Polignac number, because 655670705 - 2²⁸ = 387235249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655670707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28691 + ... + 46200.

It is an arithmetic number, because the mean of its divisors is an integer number (52574184).

Almost surely, 2^655670705 is an apocalyptic number.

It is an amenable number.

655670705 is a deficient number, since it is larger than the sum of its proper divisors (185516239).

655670705 is a wasteful number, since it uses less digits than its factorization.

655670705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75016.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 655670705 is about 25606.0677379406. The cubic root of 655670705 is about 868.7508850120.

The spelling of 655670705 in words is "six hundred fifty-five million, six hundred seventy thousand, seven hundred five".