676702019161 has 9 divisors (see below), whose sum is σ = 787190679999. Its totient is φ = 580025366424.

The previous prime is 676702019131. The next prime is 676702019237. The reversal of 676702019161 is 161910207676.

The square root of 676702019161 is 822619.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 104022375625 + 572679643536 = 322525^2 + 756756^2 .

It is not a de Polignac number, because 676702019161 - 2¹⁹ = 676701494873 is a prime.

It is a super-2 number, since 2×676702019161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676702019101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5699575 + ... + 5817091.

It is an arithmetic number, because the mean of its divisors is an integer number (87465631111).

Almost surely, 2^676702019161 is an apocalyptic number.

676702019161 is the 822619-th square number.

676702019161 is the 411310-th centered octagonal number.

It is an amenable number.

676702019161 is a deficient number, since it is larger than the sum of its proper divisors (110488660838).

676702019161 is an frugal number, since it uses more digits than its factorization.

676702019161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235048 (or 117524 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 676702019161 in words is "six hundred seventy-six billion, seven hundred two million, nineteen thousand, one hundred sixty-one".