3386720645 has 32 divisors (see below), whose sum is σ = 5333575680. Its totient is φ = 2000082240.

The previous prime is 3386720573. The next prime is 3386720651. The reversal of 3386720645 is 5460276833.

It is not a de Polignac number, because 3386720645 - 2¹⁰ = 3386719621 is a prime.

It is a super-2 number, since 2×3386720645² = 22939753454538432050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3386720596 and 3386720605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224177 + ... + 238806.

It is an arithmetic number, because the mean of its divisors is an integer number (166674240).

Almost surely, 2^3386720645 is an apocalyptic number.

3386720645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3386720645 is a deficient number, since it is larger than the sum of its proper divisors (1946855035).

3386720645 is a wasteful number, since it uses less digits than its factorization.

3386720645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463025.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 3386720645 is about 58195.5380162431. The cubic root of 3386720645 is about 1501.7343856831.

The spelling of 3386720645 in words is "three billion, three hundred eighty-six million, seven hundred twenty thousand, six hundred forty-five".