7491213 has 12 divisors (see below), whose sum is σ = 10933468. Its totient is φ = 4942080.

The previous prime is 7491199. The next prime is 7491217. The reversal of 7491213 is 3121947.

7491213 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1004004 + 6487209 = 1002^2 + 2547^2 .

It is not a de Polignac number, because 7491213 - 2¹⁴ = 7474829 is a prime.

It is a super-2 number, since 2×7491213² = 112236544422738, which contains 22 as substring.

It is a Duffinian number.

7491213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7491217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3418 + ... + 5163.

Almost surely, 2^7491213 is an apocalyptic number.

It is an amenable number.

7491213 is a deficient number, since it is larger than the sum of its proper divisors (3442255).

7491213 is a wasteful number, since it uses less digits than its factorization.

7491213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684 (or 8681 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 7491213 is about 2737.0080379860. The cubic root of 7491213 is about 195.6669078695. Note that the first 3 decimals are identical.

The spelling of 7491213 in words is "seven million, four hundred ninety-one thousand, two hundred thirteen".