376564649 has 2 divisors, whose sum is σ = 376564650. Its totient is φ = 376564648.

The previous prime is 376564621. The next prime is 376564679. The reversal of 376564649 is 946465673.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220314649 + 156250000 = 14843^2 + 12500^2 .

It is a cyclic number.

It is not a de Polignac number, because 376564649 - 2¹² = 376560553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 376564597 and 376564606.

It is not a weakly prime, because it can be changed into another prime (376564679) 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, 188282324 + 188282325.

It is an arithmetic number, because the mean of its divisors is an integer number (188282325).

Almost surely, 2^376564649 is an apocalyptic number.

It is an amenable number.

376564649 is a deficient number, since it is larger than the sum of its proper divisors (1).

376564649 is an equidigital number, since it uses as much as digits as its factorization.

376564649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The square root of 376564649 is about 19405.2737419496. The cubic root of 376564649 is about 722.1263332006.

The spelling of 376564649 in words is "three hundred seventy-six million, five hundred sixty-four thousand, six hundred forty-nine".