74517479 has 2 divisors, whose sum is σ = 74517480. Its totient is φ = 74517478.

The previous prime is 74517439. The next prime is 74517481. The reversal of 74517479 is 97471547.

It is a strong prime.

It is an emirp because it is prime and its reverse (97471547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74517479 - 2²⁰ = 73468903 is a prime.

Together with 74517481, 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 (74517439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37258739 + 37258740.

It is an arithmetic number, because the mean of its divisors is an integer number (37258740).

Almost surely, 2^74517479 is an apocalyptic number.

74517479 is a deficient number, since it is larger than the sum of its proper divisors (1).

74517479 is an equidigital number, since it uses as much as digits as its factorization.

74517479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 44.

The square root of 74517479 is about 8632.3507227174. The cubic root of 74517479 is about 420.8099995907.

The spelling of 74517479 in words is "seventy-four million, five hundred seventeen thousand, four hundred seventy-nine".