6406436 has 6 divisors (see below), whose sum is σ = 11211270. Its totient is φ = 3203216.

The previous prime is 6406427. The next prime is 6406447. The reversal of 6406436 is 6346046.

It can be written as a sum of positive squares in only one way, i.e., 6150400 + 256036 = 2480^2 + 506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6406399 and 6406408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800801 + ... + 800808.

It is an arithmetic number, because the mean of its divisors is an integer number (1868545).

Almost surely, 2^6406436 is an apocalyptic number.

It is an amenable number.

6406436 is a deficient number, since it is larger than the sum of its proper divisors (4804834).

6406436 is a wasteful number, since it uses less digits than its factorization.

6406436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601613 (or 1601611 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 6406436 is about 2531.0938346889. The cubic root of 6406436 is about 185.7257684644.

The spelling of 6406436 in words is "six million, four hundred six thousand, four hundred thirty-six".