6400700 has 18 divisors (see below), whose sum is σ = 13889736. Its totient is φ = 2560240.

The previous prime is 6400697. The next prime is 6400717. The reversal of 6400700 is 70046.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31904 + ... + 32103.

It is an arithmetic number, because the mean of its divisors is an integer number (771652).

Almost surely, 2^6400700 is an apocalyptic number.

It is an amenable number.

6400700 is an abundant number, since it is smaller than the sum of its proper divisors (7489036).

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

6400700 is a wasteful number, since it uses less digits than its factorization.

6400700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64021 (or 64014 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 6400700 is about 2529.9604739995. The cubic root of 6400700 is about 185.6703220815.

Adding to 6400700 its reverse (70046), we get a palindrome (6470746).

The spelling of 6400700 in words is "six million, four hundred thousand, seven hundred".