3340661557 has 4 divisors (see below), whose sum is σ = 3373737516. Its totient is φ = 3307585600.

The previous prime is 3340661549. The next prime is 3340661563. The reversal of 3340661557 is 7551660433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7551660433 = 137 ⋅55121609.

It can be written as a sum of positive squares in 2 ways, for example, as 2943496516 + 397165041 = 54254^2 + 19929^2 .

It is a cyclic number.

It is not a de Polignac number, because 3340661557 - 2³ = 3340661549 is a prime.

It is a super-2 number, since 2×3340661557² = 22320039276835328498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3340661507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16537828 + ... + 16538029.

It is an arithmetic number, because the mean of its divisors is an integer number (843434379).

Almost surely, 2^3340661557 is an apocalyptic number.

It is an amenable number.

3340661557 is a deficient number, since it is larger than the sum of its proper divisors (33075959).

3340661557 is a wasteful number, since it uses less digits than its factorization.

3340661557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33075958.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 3340661557 is about 57798.4563548197. The cubic root of 3340661557 is about 1494.8954721607.

The spelling of 3340661557 in words is "three billion, three hundred forty million, six hundred sixty-one thousand, five hundred fifty-seven".