6213990 has 32 divisors (see below), whose sum is σ = 15065856. Its totient is φ = 1640160.

The previous prime is 6213953. The next prime is 6213997. The reversal of 6213990 is 993126.

It is a super-2 number, since 2×6213990² = 77227343440200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6213997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085 + ... + 4095.

It is an arithmetic number, because the mean of its divisors is an integer number (470808).

Almost surely, 2^6213990 is an apocalyptic number.

6213990 is an abundant number, since it is smaller than the sum of its proper divisors (8851866).

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

6213990 is a wasteful number, since it uses less digits than its factorization.

6213990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 6213990 is about 2492.7875962464. The cubic root of 6213990 is about 183.8471280662.

The spelling of 6213990 in words is "six million, two hundred thirteen thousand, nine hundred ninety".