3397815785 has 48 divisors (see below), whose sum is σ = 5069062656. Its totient is φ = 2129162112.

The previous prime is 3397815781. The next prime is 3397815787. The reversal of 3397815785 is 5875187933.

It is a happy number.

3397815785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3397815785 - 2² = 3397815781 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3397815785.

It is not an unprimeable number, because it can be changed into a prime (3397815781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7338464 + ... + 7338926.

It is an arithmetic number, because the mean of its divisors is an integer number (105605472).

Almost surely, 2^3397815785 is an apocalyptic number.

3397815785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3397815785 is a deficient number, since it is larger than the sum of its proper divisors (1671246871).

3397815785 is a wasteful number, since it uses less digits than its factorization.

3397815785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 615 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 56.

The square root of 3397815785 is about 58290.7864503474. The cubic root of 3397815785 is about 1503.3725279835.

The spelling of 3397815785 in words is "three billion, three hundred ninety-seven million, eight hundred fifteen thousand, seven hundred eighty-five".