74216977 has 2 divisors, whose sum is σ = 74216978. Its totient is φ = 74216976.

The previous prime is 74216911. The next prime is 74216993. The reversal of 74216977 is 77961247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49575681 + 24641296 = 7041^2 + 4964^2 .

It is a cyclic number.

It is not a de Polignac number, because 74216977 - 2¹¹ = 74214929 is a prime.

It is not a weakly prime, because it can be changed into another prime (74216677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37108488 + 37108489.

It is an arithmetic number, because the mean of its divisors is an integer number (37108489).

Almost surely, 2^74216977 is an apocalyptic number.

It is an amenable number.

74216977 is a deficient number, since it is larger than the sum of its proper divisors (1).

74216977 is an equidigital number, since it uses as much as digits as its factorization.

74216977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 43.

The square root of 74216977 is about 8614.9275678905. The cubic root of 74216977 is about 420.2435794191.

The spelling of 74216977 in words is "seventy-four million, two hundred sixteen thousand, nine hundred seventy-seven".