6413866 has 4 divisors (see below), whose sum is σ = 9620802. Its totient is φ = 3206932.

The previous prime is 6413863. The next prime is 6413873. The reversal of 6413866 is 6683146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 308025 = 2471^2 + 555^2 .

It is a super-2 number, since 2×6413866² = 82275354131912, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6³ + 4¹¹ + 1 + 3¹² + 8³ + 6⁵ + 6⁸ .

It is not an unprimeable number, because it can be changed into a prime (6413863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603465 + ... + 1603468.

Almost surely, 2^6413866 is an apocalyptic number.

6413866 is a deficient number, since it is larger than the sum of its proper divisors (3206936).

6413866 is a wasteful number, since it uses less digits than its factorization.

6413866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206935.

The product of its digits is 20736, while the sum is 34.

The square root of 6413866 is about 2532.5611542468. The cubic root of 6413866 is about 185.7975405246.

The spelling of 6413866 in words is "six million, four hundred thirteen thousand, eight hundred sixty-six".