38700661 has 2 divisors, whose sum is σ = 38700662. Its totient is φ = 38700660.

The previous prime is 38700643. The next prime is 38700677. The reversal of 38700661 is 16600783.

38700661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 5130225 = 5794^2 + 2265^2 .

It is an emirp because it is prime and its reverse (16600783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38700661 - 2⁹ = 38700149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38700061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19350330 + 19350331.

It is an arithmetic number, because the mean of its divisors is an integer number (19350331).

Almost surely, 2^38700661 is an apocalyptic number.

It is an amenable number.

38700661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38700661 is an equidigital number, since it uses as much as digits as its factorization.

38700661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 38700661 is about 6220.9855328557. The cubic root of 38700661 is about 338.2512895022.

The spelling of 38700661 in words is "thirty-eight million, seven hundred thousand, six hundred sixty-one".