72773677 has 2 divisors, whose sum is σ = 72773678. Its totient is φ = 72773676.

The previous prime is 72773663. The next prime is 72773683. The reversal of 72773677 is 77637727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42237001 + 30536676 = 6499^2 + 5526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72773677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72773777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36386838 + 36386839.

It is an arithmetic number, because the mean of its divisors is an integer number (36386839).

Almost surely, 2^72773677 is an apocalyptic number.

It is an amenable number.

72773677 is a deficient number, since it is larger than the sum of its proper divisors (1).

72773677 is an equidigital number, since it uses as much as digits as its factorization.

72773677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 605052, while the sum is 46.

The square root of 72773677 is about 8530.7489120241. The cubic root of 72773677 is about 417.5015635736.

The spelling of 72773677 in words is "seventy-two million, seven hundred seventy-three thousand, six hundred seventy-seven".