371666497 has 2 divisors, whose sum is σ = 371666498. Its totient is φ = 371666496.

The previous prime is 371666489. The next prime is 371666509. The reversal of 371666497 is 794666173.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218921616 + 152744881 = 14796^2 + 12359^2 .

It is a cyclic number.

It is not a de Polignac number, because 371666497 - 2³ = 371666489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 371666497.

It is not a weakly prime, because it can be changed into another prime (371663497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185833248 + 185833249.

It is an arithmetic number, because the mean of its divisors is an integer number (185833249).

Almost surely, 2^371666497 is an apocalyptic number.

It is an amenable number.

371666497 is a deficient number, since it is larger than the sum of its proper divisors (1).

371666497 is an equidigital number, since it uses as much as digits as its factorization.

371666497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 49.

The square root of 371666497 is about 19278.6539208525. The cubic root of 371666497 is about 718.9816474057.

The spelling of 371666497 in words is "three hundred seventy-one million, six hundred sixty-six thousand, four hundred ninety-seven".