63670165 has 8 divisors (see below), whose sum is σ = 82281528. Its totient is φ = 47017920.

The previous prime is 63670163. The next prime is 63670183. The reversal of 63670165 is 56107636.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 63632529 = 194^2 + 7977^2 .

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

It is not a de Polignac number, because 63670165 - 2¹ = 63670163 is a prime.

It is a super-2 number, since 2×63670165² = 8107779822254450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63670165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63670163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489706 + ... + 489835.

It is an arithmetic number, because the mean of its divisors is an integer number (10285191).

Almost surely, 2^63670165 is an apocalyptic number.

63670165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63670165 is a deficient number, since it is larger than the sum of its proper divisors (18611363).

63670165 is a wasteful number, since it uses less digits than its factorization.

63670165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979559.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 63670165 is about 7979.3586835033. The cubic root of 63670165 is about 399.3116598992.

The spelling of 63670165 in words is "sixty-three million, six hundred seventy thousand, one hundred sixty-five".