3420720626 has 8 divisors (see below), whose sum is σ = 5135160240. Its totient is φ = 1709000548.

The previous prime is 3420720599. The next prime is 3420720643. The reversal of 3420720626 is 6260270243.

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

It is a super-2 number, since 2×3420720626² = 23402659202283663752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3420720592 and 3420720601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676736 + ... + 681771.

It is an arithmetic number, because the mean of its divisors is an integer number (641895030).

Almost surely, 2^3420720626 is an apocalyptic number.

3420720626 is a deficient number, since it is larger than the sum of its proper divisors (1714439614).

3420720626 is a wasteful number, since it uses less digits than its factorization.

3420720626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359768.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 3420720626 is about 58486.9269666308. The cubic root of 3420720626 is about 1506.7430680077.

Adding to 3420720626 its reverse (6260270243), we get a palindrome (9680990869).

The spelling of 3420720626 in words is "three billion, four hundred twenty million, seven hundred twenty thousand, six hundred twenty-six".