374740661 has 2 divisors, whose sum is σ = 374740662. Its totient is φ = 374740660.

The previous prime is 374740651. The next prime is 374740711. The reversal of 374740661 is 166047473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249166225 + 125574436 = 15785^2 + 11206^2 .

It is an emirp because it is prime and its reverse (166047473) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-374740661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374740651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187370330 + 187370331.

It is an arithmetic number, because the mean of its divisors is an integer number (187370331).

Almost surely, 2^374740661 is an apocalyptic number.

It is an amenable number.

374740661 is a deficient number, since it is larger than the sum of its proper divisors (1).

374740661 is an equidigital number, since it uses as much as digits as its factorization.

374740661 is an odious number, because the sum of its binary digits is odd.

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

The square root of 374740661 is about 19358.2194687425. The cubic root of 374740661 is about 720.9585105681.

The spelling of 374740661 in words is "three hundred seventy-four million, seven hundred forty thousand, six hundred sixty-one".