38697761 has 4 divisors (see below), whose sum is σ = 38738112. Its totient is φ = 38657412.

The previous prime is 38697751. The next prime is 38697781. The reversal of 38697761 is 16779683.

38697761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16779683 = 2699 ⋅6217.

It is a cyclic number.

It is not a de Polignac number, because 38697761 - 2⁶ = 38697697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38697751) 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 in 3 ways as a sum of consecutive naturals, for example, 18701 + ... + 20666.

It is an arithmetic number, because the mean of its divisors is an integer number (9684528).

Almost surely, 2^38697761 is an apocalyptic number.

It is an amenable number.

38697761 is a deficient number, since it is larger than the sum of its proper divisors (40351).

38697761 is an equidigital number, since it uses as much as digits as its factorization.

38697761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40350.

The product of its digits is 381024, while the sum is 47.

The square root of 38697761 is about 6220.7524464489. The cubic root of 38697761 is about 338.2428404368.

The spelling of 38697761 in words is "thirty-eight million, six hundred ninety-seven thousand, seven hundred sixty-one".