7491636 has 48 divisors (see below), whose sum is σ = 19716480. Its totient is φ = 2459520.

The previous prime is 7491623. The next prime is 7491641. The reversal of 7491636 is 6361947.

7491636 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7491636² = 112249219912992, which contains 22 as substring.

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 a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7491636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7180 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (410760).

Almost surely, 2^7491636 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 7491636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9858240).

7491636 is an abundant number, since it is smaller than the sum of its proper divisors (12224844).

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

7491636 is a wasteful number, since it uses less digits than its factorization.

7491636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1053 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7491636 is about 2737.0853110563. The cubic root of 7491636 is about 195.6705906529.

The spelling of 7491636 in words is "seven million, four hundred ninety-one thousand, six hundred thirty-six".