38666701 has 2 divisors, whose sum is σ = 38666702. Its totient is φ = 38666700.

The previous prime is 38666699. The next prime is 38666723. The reversal of 38666701 is 10766683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35390601 + 3276100 = 5949^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 38666701 - 2¹ = 38666699 is a prime.

It is a super-3 number, since 3×38666701³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 38666699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38666401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19333350 + 19333351.

It is an arithmetic number, because the mean of its divisors is an integer number (19333351).

Almost surely, 2^38666701 is an apocalyptic number.

It is an amenable number.

38666701 is a deficient number, since it is larger than the sum of its proper divisors (1).

38666701 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 38666701 = (80673661)₉.

38666701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 38666701 is about 6218.2554627484. The cubic root of 38666701 is about 338.1523215509.

The spelling of 38666701 in words is "thirty-eight million, six hundred sixty-six thousand, seven hundred one".