7640369 has 16 divisors (see below), whose sum is σ = 8838720. Its totient is φ = 6538560.

The previous prime is 7640363. The next prime is 7640371. The reversal of 7640369 is 9630467.

It is a cyclic number.

It is not a de Polignac number, because 7640369 - 2¹² = 7636273 is a prime.

It is a super-2 number, since 2×7640369² = 116750476912322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁸ + 6⁴ + 4 + 0 + 3¹³ + 6⁷ + 9 .

It is not an unprimeable number, because it can be changed into a prime (7640363) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13439 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (552420).

Almost surely, 2^7640369 is an apocalyptic number.

It is an amenable number.

7640369 is a deficient number, since it is larger than the sum of its proper divisors (1198351).

7640369 is a wasteful number, since it uses less digits than its factorization.

7640369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 7640369 is about 2764.1217411684. The cubic root of 7640369 is about 196.9570108985.

The spelling of 7640369 in words is "seven million, six hundred forty thousand, three hundred sixty-nine".