3220690 has 64 divisors (see below), whose sum is σ = 7050240. Its totient is φ = 1045440.

The previous prime is 3220681. The next prime is 3220699. The reversal of 3220690 is 960223.

It is an interprime number because it is at equal distance from previous prime (3220681) and next prime (3220699).

It is a super-2 number, since 2×3220690² = 20745688152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48037 + ... + 48103.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

Almost surely, 2^3220690 is an apocalyptic number.

3220690 is an abundant number, since it is smaller than the sum of its proper divisors (3829550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3220690 is a wasteful number, since it uses less digits than its factorization.

3220690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3220690 is about 1794.6280951774. The cubic root of 3220690 is about 147.6781721275.

The spelling of 3220690 in words is "three million, two hundred twenty thousand, six hundred ninety".