6401772 has 36 divisors (see below), whose sum is σ = 17428320. Its totient is φ = 1969632.

The previous prime is 6401771. The next prime is 6401827. The reversal of 6401772 is 2771046.

6401772 is a `hidden beast` number, since 640 + 17 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (6401771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6372 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (484120).

Almost surely, 2^6401772 is an apocalyptic number.

It is an amenable number.

6401772 is an abundant number, since it is smaller than the sum of its proper divisors (11026548).

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

6401772 is a wasteful number, since it uses less digits than its factorization.

6401772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13702 (or 13697 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 6401772 is about 2530.1723261470. The cubic root of 6401772 is about 185.6806869621.

The spelling of 6401772 in words is "six million, four hundred one thousand, seven hundred seventy-two".