74776997 has 2 divisors, whose sum is σ = 74776998. Its totient is φ = 74776996.

The previous prime is 74776969. The next prime is 74777041. The reversal of 74776997 is 79967747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67881121 + 6895876 = 8239^2 + 2626^2 .

It is an emirp because it is prime and its reverse (79967747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74776997 - 2¹⁰ = 74775973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74776927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37388498 + 37388499.

It is an arithmetic number, because the mean of its divisors is an integer number (37388499).

Almost surely, 2^74776997 is an apocalyptic number.

It is an amenable number.

74776997 is a deficient number, since it is larger than the sum of its proper divisors (1).

74776997 is an equidigital number, since it uses as much as digits as its factorization.

74776997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4667544, while the sum is 56.

The square root of 74776997 is about 8647.3693687734. The cubic root of 74776997 is about 421.2979443357.

The spelling of 74776997 in words is "seventy-four million, seven hundred seventy-six thousand, nine hundred ninety-seven".