6440160 has 48 divisors (see below), whose sum is σ = 20288016. Its totient is φ = 1717248.

The previous prime is 6440149. The next prime is 6440171. The reversal of 6440160 is 610446.

It is an interprime number because it is at equal distance from previous prime (6440149) and next prime (6440171).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6229 + ... + 7188.

It is an arithmetic number, because the mean of its divisors is an integer number (422667).

Almost surely, 2^6440160 is an apocalyptic number.

6440160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6440160 is an abundant number, since it is smaller than the sum of its proper divisors (13847856).

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

6440160 is a wasteful number, since it uses less digits than its factorization.

6440160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435 (or 13427 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6440160 is about 2537.7470323104. The cubic root of 6440160 is about 186.0510901393.

The spelling of 6440160 in words is "six million, four hundred forty thousand, one hundred sixty".