7247690 has 8 divisors (see below), whose sum is σ = 13045860. Its totient is φ = 2899072.

The previous prime is 7247687. The next prime is 7247699. The reversal of 7247690 is 967427.

It can be written as a sum of positive squares in 2 ways, for example, as 7006609 + 241081 = 2647^2 + 491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7247690² = 105058020672200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7247690.

It is not an unprimeable number, because it can be changed into a prime (7247699) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 362375 + ... + 362394.

Almost surely, 2^7247690 is an apocalyptic number.

7247690 is a deficient number, since it is larger than the sum of its proper divisors (5798170).

7247690 is a wasteful number, since it uses less digits than its factorization.

7247690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724776.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 7247690 is about 2692.1534131620. The cubic root of 7247690 is about 193.5232741581.

The spelling of 7247690 in words is "seven million, two hundred forty-seven thousand, six hundred ninety".