6401477 has 2 divisors, whose sum is σ = 6401478. Its totient is φ = 6401476.

The previous prime is 6401471. The next prime is 6401497. The reversal of 6401477 is 7741046.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6145441 + 256036 = 2479^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 6401477 - 2⁶ = 6401413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6401471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200738 + 3200739.

It is an arithmetic number, because the mean of its divisors is an integer number (3200739).

Almost surely, 2^6401477 is an apocalyptic number.

It is an amenable number.

6401477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401477 is an equidigital number, since it uses as much as digits as its factorization.

6401477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 6401477 is about 2530.1140290509. The cubic root of 6401477 is about 185.6778348016.

The spelling of 6401477 in words is "six million, four hundred one thousand, four hundred seventy-seven".