7649431 has 2 divisors, whose sum is σ = 7649432. Its totient is φ = 7649430.

The previous prime is 7649413. The next prime is 7649443. The reversal of 7649431 is 1349467.

It is a happy number.

Together with previous prime (7649413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7649431 - 2¹⁷ = 7518359 is a prime.

It is a super-2 number, since 2×7649431² = 117027589247522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7649471) 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 as a sum of consecutive naturals, namely, 3824715 + 3824716.

It is an arithmetic number, because the mean of its divisors is an integer number (3824716).

Almost surely, 2^7649431 is an apocalyptic number.

7649431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7649431 is an equidigital number, since it uses as much as digits as its factorization.

7649431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 7649431 is about 2765.7604740830. The cubic root of 7649431 is about 197.0348482933.

The spelling of 7649431 in words is "seven million, six hundred forty-nine thousand, four hundred thirty-one".