7140636 has 30 divisors (see below), whose sum is σ = 18667880. Its totient is φ = 2380104.

The previous prime is 7140611. The next prime is 7140643. The reversal of 7140636 is 6360417.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10696 + ... + 11343.

Almost surely, 2^7140636 is an apocalyptic number.

It is an amenable number.

7140636 is an abundant number, since it is smaller than the sum of its proper divisors (11527244).

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

7140636 is a wasteful number, since it uses less digits than its factorization.

7140636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055 (or 22044 counting only the distinct ones).

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

The square root of 7140636 is about 2672.1968490364. The cubic root of 7140636 is about 192.5657143384.

It can be divided in two parts, 7140 and 636, that added together give a 5-th power (7776 = 6⁵).

The spelling of 7140636 in words is "seven million, one hundred forty thousand, six hundred thirty-six".