6401407 has 8 divisors (see below), whose sum is σ = 6787712. Its totient is φ = 6026400.

The previous prime is 6401399. The next prime is 6401411. The reversal of 6401407 is 7041046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6401407 - 2³ = 6401399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644 + ... + 3937.

It is an arithmetic number, because the mean of its divisors is an integer number (848464).

Almost surely, 2^6401407 is an apocalyptic number.

6401407 is a deficient number, since it is larger than the sum of its proper divisors (386305).

6401407 is a wasteful number, since it uses less digits than its factorization.

6401407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 6401407 is about 2530.1001956444. The cubic root of 6401407 is about 185.6771580049.

The spelling of 6401407 in words is "six million, four hundred one thousand, four hundred seven".