102661486 has 4 divisors (see below), whose sum is σ = 153992232. Its totient is φ = 51330742.

The previous prime is 102661459. The next prime is 102661529. The reversal of 102661486 is 684166201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665370 + ... + 25665373.

It is an arithmetic number, because the mean of its divisors is an integer number (38498058).

Almost surely, 2^102661486 is an apocalyptic number.

102661486 is a deficient number, since it is larger than the sum of its proper divisors (51330746).

102661486 is an equidigital number, since it uses as much as digits as its factorization.

102661486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51330745.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 102661486 is about 10132.2004520242. The cubic root of 102661486 is about 468.2407234327.

The spelling of 102661486 in words is "one hundred two million, six hundred sixty-one thousand, four hundred eighty-six".