7640400767 has 2 divisors, whose sum is σ = 7640400768. Its totient is φ = 7640400766.

The previous prime is 7640400701. The next prime is 7640400769. The reversal of 7640400767 is 7670040467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7640400767 - 2¹⁶ = 7640335231 is a prime.

Together with 7640400769, 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 (7640400769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820200383 + 3820200384.

It is an arithmetic number, because the mean of its divisors is an integer number (3820200384).

Almost surely, 2^7640400767 is an apocalyptic number.

7640400767 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640400767 is an equidigital number, since it uses as much as digits as its factorization.

7640400767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 7640400767 is about 87409.3860349105. The cubic root of 7640400767 is about 1969.5728386628.

The spelling of 7640400767 in words is "seven billion, six hundred forty million, four hundred thousand, seven hundred sixty-seven".