6350640 has 80 divisors (see below), whose sum is σ = 20141568. Its totient is φ = 1654528.

The previous prime is 6350633. The next prime is 6350647. The reversal of 6350640 is 460536.

It is an interprime number because it is at equal distance from previous prime (6350633) and next prime (6350647).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6350640.

It is not an unprimeable number, because it can be changed into a prime (6350647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10999 + ... + 11561.

Almost surely, 2^6350640 is an apocalyptic number.

6350640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6350640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10070784).

6350640 is an abundant number, since it is smaller than the sum of its proper divisors (13790928).

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

6350640 is a wasteful number, since it uses less digits than its factorization.

6350640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 6350640 is about 2520.0476185977. The cubic root of 6350640 is about 185.1850109233.

It can be divided in two parts, 63506 and 40, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 6350640 in words is "six million, three hundred fifty thousand, six hundred forty".