3345720533 has 4 divisors (see below), whose sum is σ = 3345836448. Its totient is φ = 3345604620.

The previous prime is 3345720529. The next prime is 3345720551. The reversal of 3345720533 is 3350275433.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3350275433 = 673 ⋅4978121.

It is a cyclic number.

It is not a de Polignac number, because 3345720533 - 2² = 3345720529 is a prime.

It is a super-2 number, since 2×3345720533² = 22387691769875608178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3345720493 and 3345720502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345720503) 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, 23510 + ... + 85112.

It is an arithmetic number, because the mean of its divisors is an integer number (836459112).

Almost surely, 2^3345720533 is an apocalyptic number.

It is an amenable number.

3345720533 is a deficient number, since it is larger than the sum of its proper divisors (115915).

3345720533 is an equidigital number, since it uses as much as digits as its factorization.

3345720533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115914.

The product of its (nonzero) digits is 113400, while the sum is 35.

The square root of 3345720533 is about 57842.2037356807. The cubic root of 3345720533 is about 1495.6496966226.

Adding to 3345720533 its reverse (3350275433), we get a palindrome (6695995966).

The spelling of 3345720533 in words is "three billion, three hundred forty-five million, seven hundred twenty thousand, five hundred thirty-three".