103623661 has 2 divisors, whose sum is σ = 103623662. Its totient is φ = 103623660.

The previous prime is 103623631. The next prime is 103623691. The reversal of 103623661 is 166326301.

It is a balanced prime because it is at equal distance from previous prime (103623631) and next prime (103623691).

It can be written as a sum of positive squares in only one way, i.e., 101002500 + 2621161 = 10050^2 + 1619^2 .

It is an emirp because it is prime and its reverse (166326301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103623661 is a prime.

It is a super-3 number, since 3×103623661³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103623631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51811830 + 51811831.

It is an arithmetic number, because the mean of its divisors is an integer number (51811831).

Almost surely, 2^103623661 is an apocalyptic number.

It is an amenable number.

103623661 is a deficient number, since it is larger than the sum of its proper divisors (1).

103623661 is an equidigital number, since it uses as much as digits as its factorization.

103623661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 103623661 is about 10179.5707669823. The cubic root of 103623661 is about 469.6990090350.

Adding to 103623661 its reverse (166326301), we get a palindrome (269949962).

The spelling of 103623661 in words is "one hundred three million, six hundred twenty-three thousand, six hundred sixty-one".