74051969 has 2 divisors, whose sum is σ = 74051970. Its totient is φ = 74051968.

The previous prime is 74051947. The next prime is 74051981. The reversal of 74051969 is 96915047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 13601344 = 7775^2 + 3688^2 .

It is an emirp because it is prime and its reverse (96915047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74051969 - 2¹² = 74047873 is a prime.

It is a super-2 number, since 2×74051969² = 10967388225553922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74051909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37025984 + 37025985.

It is an arithmetic number, because the mean of its divisors is an integer number (37025985).

Almost surely, 2^74051969 is an apocalyptic number.

It is an amenable number.

74051969 is a deficient number, since it is larger than the sum of its proper divisors (1).

74051969 is an equidigital number, since it uses as much as digits as its factorization.

74051969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 74051969 is about 8605.3453736617. The cubic root of 74051969 is about 419.9319031698.

The spelling of 74051969 in words is "seventy-four million, fifty-one thousand, nine hundred sixty-nine".