72867077 has 2 divisors, whose sum is σ = 72867078. Its totient is φ = 72867076.

The previous prime is 72867007. The next prime is 72867089. The reversal of 72867077 is 77076827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 9728161 = 7946^2 + 3119^2 .

It is a cyclic number.

It is not a de Polignac number, because 72867077 - 2¹⁸ = 72604933 is a prime.

It is a super-2 number, since 2×72867077² = 10619221821047858, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72867007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36433538 + 36433539.

It is an arithmetic number, because the mean of its divisors is an integer number (36433539).

Almost surely, 2^72867077 is an apocalyptic number.

It is an amenable number.

72867077 is a deficient number, since it is larger than the sum of its proper divisors (1).

72867077 is an equidigital number, since it uses as much as digits as its factorization.

72867077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230496, while the sum is 44.

The square root of 72867077 is about 8536.2214708851. The cubic root of 72867077 is about 417.6800987125.

The spelling of 72867077 in words is "seventy-two million, eight hundred sixty-seven thousand, seventy-seven".