6357664 has 24 divisors (see below), whose sum is σ = 12725748. Its totient is φ = 3125760.

The previous prime is 6357661. The next prime is 6357667. The reversal of 6357664 is 4667536.

It is an interprime number because it is at equal distance from previous prime (6357661) and next prime (6357667).

It can be written as a sum of positive squares in 2 ways, for example, as 6290064 + 67600 = 2508^2 + 260^2 .

It is not an unprimeable number, because it can be changed into a prime (6357661) 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, 324 + ... + 3580.

Almost surely, 2^6357664 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 6357664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6362874).

6357664 is an abundant number, since it is smaller than the sum of its proper divisors (6368084).

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

6357664 is a wasteful number, since it uses less digits than its factorization.

6357664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328 (or 3320 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 6357664 is about 2521.4408579223. The cubic root of 6357664 is about 185.2532591764.

It can be divided in two parts, 6357 and 664, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6357664 in words is "six million, three hundred fifty-seven thousand, six hundred sixty-four".