74691311 has 2 divisors, whose sum is σ = 74691312. Its totient is φ = 74691310.

The previous prime is 74691293. The next prime is 74691313. The reversal of 74691311 is 11319647.

It is a strong prime.

It is an emirp because it is prime and its reverse (11319647) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74691311 is a prime.

Together with 74691313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74691313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37345655 + 37345656.

It is an arithmetic number, because the mean of its divisors is an integer number (37345656).

Almost surely, 2^74691311 is an apocalyptic number.

74691311 is a deficient number, since it is larger than the sum of its proper divisors (1).

74691311 is an equidigital number, since it uses as much as digits as its factorization.

74691311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 74691311 is about 8642.4134939263. The cubic root of 74691311 is about 421.1369628642.

The spelling of 74691311 in words is "seventy-four million, six hundred ninety-one thousand, three hundred eleven".