7640612429 has 2 divisors, whose sum is σ = 7640612430. Its totient is φ = 7640612428.

The previous prime is 7640612417. The next prime is 7640612431. The reversal of 7640612429 is 9242160467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7640508100 + 104329 = 87410^2 + 323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7640612429 is a prime.

Together with 7640612431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7640612479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820306214 + 3820306215.

It is an arithmetic number, because the mean of its divisors is an integer number (3820306215).

Almost surely, 2^7640612429 is an apocalyptic number.

It is an amenable number.

7640612429 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640612429 is an equidigital number, since it uses as much as digits as its factorization.

7640612429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 7640612429 is about 87410.5967775075. The cubic root of 7640612429 is about 1969.5910261850.

The spelling of 7640612429 in words is "seven billion, six hundred forty million, six hundred twelve thousand, four hundred twenty-nine".