6021221646 has 32 divisors (see below), whose sum is σ = 13188365568. Its totient is φ = 1817507840.

The previous prime is 6021221627. The next prime is 6021221663. The reversal of 6021221646 is 6461221206.

It is a super-2 number, since 2×6021221646² = 72510220220517898632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160530 + ... + 194453.

It is an arithmetic number, because the mean of its divisors is an integer number (412136424).

Almost surely, 2^6021221646 is an apocalyptic number.

6021221646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6021221646 is an abundant number, since it is smaller than the sum of its proper divisors (7167143922).

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

6021221646 is a wasteful number, since it uses less digits than its factorization.

6021221646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355256.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 6021221646 is about 77596.5311466950. The cubic root of 6021221646 is about 1819.2604214379.

The spelling of 6021221646 in words is "six billion, twenty-one million, two hundred twenty-one thousand, six hundred forty-six".