102661005 has 8 divisors (see below), whose sum is σ = 164257632. Its totient is φ = 54752528.

The previous prime is 102661001. The next prime is 102661063. The reversal of 102661005 is 500166201.

It is a happy number.

102661005 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is not a de Polignac number, because 102661005 - 2² = 102661001 is a prime.

It is a super-2 number, since 2×102661005² = 21078563895220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102661001) 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, 3422019 + ... + 3422048.

It is an arithmetic number, because the mean of its divisors is an integer number (20532204).

Almost surely, 2^102661005 is an apocalyptic number.

102661005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102661005 is a deficient number, since it is larger than the sum of its proper divisors (61596627).

102661005 is an equidigital number, since it uses as much as digits as its factorization.

102661005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844075.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 102661005 is about 10132.1767157901. The cubic root of 102661005 is about 468.2399921486.

The spelling of 102661005 in words is "one hundred two million, six hundred sixty-one thousand, five".