3729785 has 8 divisors (see below), whose sum is σ = 4596936. Its totient is φ = 2903040.

The previous prime is 3729767. The next prime is 3729793. The reversal of 3729785 is 5879273.

It can be written as a sum of positive squares in 4 ways, for example, as 1283689 + 2446096 = 1133^2 + 1564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3729785 - 2⁶ = 3729721 is a prime.

It is a super-2 number, since 2×3729785² = 27822592292450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹³ + 7 + 2²¹ + 9 + 7⁴ + 8⁵ + 5⁵ .

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9896 + ... + 10265.

It is an arithmetic number, because the mean of its divisors is an integer number (574617).

Almost surely, 2^3729785 is an apocalyptic number.

It is an amenable number.

3729785 is a deficient number, since it is larger than the sum of its proper divisors (867151).

3729785 is a wasteful number, since it uses less digits than its factorization.

3729785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20203.

The product of its digits is 105840, while the sum is 41.

The square root of 3729785 is about 1931.2651293906. The cubic root of 3729785 is about 155.0819545786.

The spelling of 3729785 in words is "three million, seven hundred twenty-nine thousand, seven hundred eighty-five".