74734661 has 2 divisors, whose sum is σ = 74734662. Its totient is φ = 74734660.

The previous prime is 74734609. The next prime is 74734663. The reversal of 74734661 is 16643747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69472225 + 5262436 = 8335^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 74734661 - 2²² = 70540357 is a prime.

Together with 74734663, 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 (74734663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37367330 + 37367331.

It is an arithmetic number, because the mean of its divisors is an integer number (37367331).

Almost surely, 2^74734661 is an apocalyptic number.

It is an amenable number.

74734661 is a deficient number, since it is larger than the sum of its proper divisors (1).

74734661 is an equidigital number, since it uses as much as digits as its factorization.

74734661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 74734661 is about 8644.9211101085. The cubic root of 74734661 is about 421.2184214985.

The spelling of 74734661 in words is "seventy-four million, seven hundred thirty-four thousand, six hundred sixty-one".