6403670 has 64 divisors (see below), whose sum is σ = 14708736. Its totient is φ = 1952640.

The previous prime is 6403651. The next prime is 6403681. The reversal of 6403670 is 763046.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28097 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (229824).

Almost surely, 2^6403670 is an apocalyptic number.

6403670 is an abundant number, since it is smaller than the sum of its proper divisors (8305066).

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

6403670 is a wasteful number, since it uses less digits than its factorization.

6403670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 6403670 is about 2530.5473716175. The cubic root of 6403670 is about 185.6990353778.

The spelling of 6403670 in words is "six million, four hundred three thousand, six hundred seventy".