1677601697 has 2 divisors, whose sum is σ = 1677601698. Its totient is φ = 1677601696.

The previous prime is 1677601661. The next prime is 1677601763. The reversal of 1677601697 is 7961067761.

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., 1600320016 + 77281681 = 40004^2 + 8791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1677601697 - 2¹² = 1677597601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1677601397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838800848 + 838800849.

It is an arithmetic number, because the mean of its divisors is an integer number (838800849).

Almost surely, 2^1677601697 is an apocalyptic number.

It is an amenable number.

1677601697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677601697 is an equidigital number, since it uses as much as digits as its factorization.

1677601697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 1677601697 is about 40958.5363141800. The cubic root of 1677601697 is about 1188.2184336206.

The spelling of 1677601697 in words is "one billion, six hundred seventy-seven million, six hundred one thousand, six hundred ninety-seven".