764278160687 has 2 divisors, whose sum is σ = 764278160688. Its totient is φ = 764278160686.

The previous prime is 764278160683. The next prime is 764278160689. The reversal of 764278160687 is 786061872467.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 764278160687 - 2² = 764278160683 is a prime.

It is a super-2 number, since 2×764278160687² (a number of 25 digits) contains 22 as substring.

Together with 764278160689, 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 (764278160683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382139080343 + 382139080344.

It is an arithmetic number, because the mean of its divisors is an integer number (382139080344).

Almost surely, 2^764278160687 is an apocalyptic number.

764278160687 is a deficient number, since it is larger than the sum of its proper divisors (1).

764278160687 is an equidigital number, since it uses as much as digits as its factorization.

764278160687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37933056, while the sum is 62.

The spelling of 764278160687 in words is "seven hundred sixty-four billion, two hundred seventy-eight million, one hundred sixty thousand, six hundred eighty-seven".