3728761 has 3 divisors (see below), whose sum is σ = 3730693. Its totient is φ = 3726830.

The previous prime is 3728759. The next prime is 3728779. The reversal of 3728761 is 1678273.

The square root of 3728761 is 1931.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3728761 - 2¹ = 3728759 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3728561) 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 2 ways as a sum of consecutive naturals, for example, 966 + ... + 2896.

Almost surely, 2^3728761 is an apocalyptic number.

3728761 is the 1931-st square number.

3728761 is the 966-th centered octagonal number.

It is an amenable number.

3728761 is a deficient number, since it is larger than the sum of its proper divisors (1932).

3728761 is an frugal number, since it uses more digits than its factorization.

3728761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862 (or 1931 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The cubic root of 3728761 is about 155.0677608689.

It can be divided in two parts, 3728 and 761, that added together give a square (4489 = 67²).

The spelling of 3728761 in words is "three million, seven hundred twenty-eight thousand, seven hundred sixty-one".