6351616 has 36 divisors (see below), whose sum is σ = 12995752. Its totient is φ = 3096576.

The previous prime is 6351613. The next prime is 6351619. The reversal of 6351616 is 6161536.

It is an interprime number because it is at equal distance from previous prime (6351613) and next prime (6351619).

It is a super-2 number, since 2×6351616² = 80686051622912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6351613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10720 + ... + 11296.

Almost surely, 2^6351616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6351616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6497876).

6351616 is an abundant number, since it is smaller than the sum of its proper divisors (6644136).

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

6351616 is an equidigital number, since it uses as much as digits as its factorization.

6351616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 622 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 6351616 is about 2520.2412582925. The cubic root of 6351616 is about 185.1944971752.

The spelling of 6351616 in words is "six million, three hundred fifty-one thousand, six hundred sixteen".