630165705 has 16 divisors (see below), whose sum is σ = 1085824320. Its totient is φ = 310235328.

The previous prime is 630165703. The next prime is 630165709. The reversal of 630165705 is 507561036.

It is not a de Polignac number, because 630165705 - 2¹ = 630165703 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630165703) 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, 1615615 + ... + 1616004.

It is an arithmetic number, because the mean of its divisors is an integer number (67864020).

Almost surely, 2^630165705 is an apocalyptic number.

630165705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

630165705 is a deficient number, since it is larger than the sum of its proper divisors (455658615).

630165705 is a wasteful number, since it uses less digits than its factorization.

630165705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231640.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 630165705 is about 25103.1015016073. The cubic root of 630165705 is about 857.3370417385.

The spelling of 630165705 in words is "six hundred thirty million, one hundred sixty-five thousand, seven hundred five".