6475440 has 40 divisors (see below), whose sum is σ = 20074608. Its totient is φ = 1726720.

The previous prime is 6475387. The next prime is 6475457. The reversal of 6475440 is 445746.

6475440 = T₂₂₅ + T₂₂₆ + ... + T₃₆₈.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6475398 and 6475407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13251 + ... + 13730.

Almost surely, 2^6475440 is an apocalyptic number.

6475440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6475440 is an abundant number, since it is smaller than the sum of its proper divisors (13599168).

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

6475440 is a wasteful number, since it uses less digits than its factorization.

6475440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26997 (or 26991 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 6475440 is about 2544.6885860553. The cubic root of 6475440 is about 186.3902086748.

The spelling of 6475440 in words is "six million, four hundred seventy-five thousand, four hundred forty".