377344661 has 2 divisors, whose sum is σ = 377344662. Its totient is φ = 377344660.

The previous prime is 377344613. The next prime is 377344673. The reversal of 377344661 is 166443773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373223761 + 4120900 = 19319^2 + 2030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377344661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377344691) 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, 188672330 + 188672331.

It is an arithmetic number, because the mean of its divisors is an integer number (188672331).

Almost surely, 2^377344661 is an apocalyptic number.

It is an amenable number.

377344661 is a deficient number, since it is larger than the sum of its proper divisors (1).

377344661 is an equidigital number, since it uses as much as digits as its factorization.

377344661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 41.

The square root of 377344661 is about 19425.3612836415. The cubic root of 377344661 is about 722.6245909266.

The spelling of 377344661 in words is "three hundred seventy-seven million, three hundred forty-four thousand, six hundred sixty-one".