6445377 has 12 divisors (see below), whose sum is σ = 9384960. Its totient is φ = 4262328.

The previous prime is 6445319. The next prime is 6445381. The reversal of 6445377 is 7735446.

6445377 is a `hidden beast` number, since 644 + 5 + 3 + 7 + 7 = 666.

It is not a de Polignac number, because 6445377 - 2¹⁰ = 6444353 is a prime.

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 not an unprimeable number, because it can be changed into a prime (6445177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1677 + ... + 3962.

It is an arithmetic number, because the mean of its divisors is an integer number (782080).

Almost surely, 2^6445377 is an apocalyptic number.

It is an amenable number.

6445377 is a deficient number, since it is larger than the sum of its proper divisors (2939583).

6445377 is a wasteful number, since it uses less digits than its factorization.

6445377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772 (or 5769 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 6445377 is about 2538.7747044588. The cubic root of 6445377 is about 186.1013149040.

The spelling of 6445377 in words is "six million, four hundred forty-five thousand, three hundred seventy-seven".