72774679 has 2 divisors, whose sum is σ = 72774680. Its totient is φ = 72774678.

The previous prime is 72774661. The next prime is 72774697. The reversal of 72774679 is 97647727.

Together with next prime (72774697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (72774661) and next prime (72774697).

It is a cyclic number.

It is not a de Polignac number, because 72774679 - 2⁷ = 72774551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72774179) 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, 36387339 + 36387340.

It is an arithmetic number, because the mean of its divisors is an integer number (36387340).

Almost surely, 2^72774679 is an apocalyptic number.

72774679 is a deficient number, since it is larger than the sum of its proper divisors (1).

72774679 is an equidigital number, since it uses as much as digits as its factorization.

72774679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1037232, while the sum is 49.

The square root of 72774679 is about 8530.8076405461. The cubic root of 72774679 is about 417.5034797181.

The spelling of 72774679 in words is "seventy-two million, seven hundred seventy-four thousand, six hundred seventy-nine".