1006436 has 6 divisors (see below), whose sum is σ = 1761270. Its totient is φ = 503216.

The previous prime is 1006433. The next prime is 1006441. The reversal of 1006436 is 6346001.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 65536 = 970^2 + 256^2 .

It is not an unprimeable number, because it can be changed into a prime (1006433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125801 + ... + 125808.

It is an arithmetic number, because the mean of its divisors is an integer number (293545).

2^1006436 is an apocalyptic number.

It is an amenable number.

1006436 is a deficient number, since it is larger than the sum of its proper divisors (754834).

1006436 is a wasteful number, since it uses less digits than its factorization.

1006436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251613 (or 251611 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1006436 is about 1003.2128388333. The cubic root of 1006436 is about 100.2140747264.

The spelling of 1006436 in words is "one million, six thousand, four hundred thirty-six".