6405948 has 18 divisors (see below), whose sum is σ = 16192904. Its totient is φ = 2135304.

The previous prime is 6405943. The next prime is 6405979. The reversal of 6405948 is 8495046.

6405948 is a `hidden beast` number, since 64 + 0 + 594 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 177943 = 6405948 / (6 + 4 + 0 + 5 + 9 + 4 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88936 + ... + 89007.

Almost surely, 2^6405948 is an apocalyptic number.

It is an amenable number.

6405948 is an abundant number, since it is smaller than the sum of its proper divisors (9786956).

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

6405948 is a wasteful number, since it uses less digits than its factorization.

6405948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177953 (or 177948 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 6405948 is about 2530.9974318438. The cubic root of 6405948 is about 185.7210525570.

The spelling of 6405948 in words is "six million, four hundred five thousand, nine hundred forty-eight".