3068721 has 24 divisors (see below), whose sum is σ = 4852224. Its totient is φ = 1860480.

The previous prime is 3068717. The next prime is 3068749. The reversal of 3068721 is 1278603.

It is not a de Polignac number, because 3068721 - 2² = 3068717 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3068711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4420 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (202176).

Almost surely, 2^3068721 is an apocalyptic number.

3068721 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3068721 is a deficient number, since it is larger than the sum of its proper divisors (1783503).

3068721 is a wasteful number, since it uses less digits than its factorization.

3068721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 3068721 is about 1751.7765268435. The cubic root of 3068721 is about 145.3179073257.

The spelling of 3068721 in words is "three million, sixty-eight thousand, seven hundred twenty-one".