6220636858 has 4 divisors (see below), whose sum is σ = 9330955290. Its totient is φ = 3110318428.

The previous prime is 6220636783. The next prime is 6220636861. The reversal of 6220636858 is 8586360226.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8586360226 = 2 ⋅4293180113.

It can be written as a sum of positive squares in only one way, i.e., 5129854129 + 1090782729 = 71623^2 + 33027^2 .

It is a super-2 number, since 2×6220636858² = 77392645838216224328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555159213 + ... + 1555159216.

Almost surely, 2^6220636858 is an apocalyptic number.

6220636858 is a deficient number, since it is larger than the sum of its proper divisors (3110318432).

6220636858 is a wasteful number, since it uses less digits than its factorization.

6220636858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110318431.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 6220636858 is about 78871.0140545942. The cubic root of 6220636858 is about 1839.1265602823.

The spelling of 6220636858 in words is "six billion, two hundred twenty million, six hundred thirty-six thousand, eight hundred fifty-eight".