1407636 has 36 divisors (see below), whose sum is σ = 3622164. Its totient is φ = 460800.

The previous prime is 1407629. The next prime is 1407647. The reversal of 1407636 is 6367041.

It can be written as a sum of positive squares in 2 ways, for example, as 608400 + 799236 = 780^2 + 894^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1876 + ... + 2516.

2^1407636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1407636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811082).

1407636 is an abundant number, since it is smaller than the sum of its proper divisors (2214528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1407636 is a wasteful number, since it uses less digits than its factorization.

1407636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1407636 is about 1186.4383675522. The cubic root of 1407636 is about 112.0719138491.

It can be divided in two parts, 140 and 7636, that added together give a 5-th power (7776 = 6⁵).

The spelling of 1407636 in words is "one million, four hundred seven thousand, six hundred thirty-six".