1665648010 has 32 divisors (see below), whose sum is σ = 3231078480. Its totient is φ = 614573568.

The previous prime is 1665647999. The next prime is 1665648029. The reversal of 1665648010 is 108465661.

It can be written as a sum of positive squares in 8 ways, for example, as 54508689 + 1611139321 = 7383^2 + 40139^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224236 + ... + 231544.

Almost surely, 2^1665648010 is an apocalyptic number.

1665648010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1665648010 is a deficient number, since it is larger than the sum of its proper divisors (1565430470).

1665648010 is a wasteful number, since it uses less digits than its factorization.

1665648010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1665648010 is about 40812.3511942157. The cubic root of 1665648010 is about 1185.3895020635.

The spelling of 1665648010 in words is "one billion, six hundred sixty-five million, six hundred forty-eight thousand, ten".