74101661 has 2 divisors, whose sum is σ = 74101662. Its totient is φ = 74101660.

The previous prime is 74101649. The next prime is 74101663. The reversal of 74101661 is 16610147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58813561 + 15288100 = 7669^2 + 3910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74101661 is a prime.

Together with 74101663, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74101661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74101663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37050830 + 37050831.

It is an arithmetic number, because the mean of its divisors is an integer number (37050831).

Almost surely, 2^74101661 is an apocalyptic number.

It is an amenable number.

74101661 is a deficient number, since it is larger than the sum of its proper divisors (1).

74101661 is an equidigital number, since it uses as much as digits as its factorization.

74101661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 74101661 is about 8608.2321646201. The cubic root of 74101661 is about 420.0258128504.

The spelling of 74101661 in words is "seventy-four million, one hundred one thousand, six hundred sixty-one".