677612770397 has 2 divisors, whose sum is σ = 677612770398. Its totient is φ = 677612770396.

The previous prime is 677612770339. The next prime is 677612770451. The reversal of 677612770397 is 793077216776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568145092516 + 109467677881 = 753754^2 + 330859^2 .

It is a cyclic number.

It is not a de Polignac number, because 677612770397 - 2¹⁶ = 677612704861 is a prime.

It is a super-3 number, since 3×677612770397³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677612770097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338806385198 + 338806385199.

It is an arithmetic number, because the mean of its divisors is an integer number (338806385199).

Almost surely, 2^677612770397 is an apocalyptic number.

It is an amenable number.

677612770397 is a deficient number, since it is larger than the sum of its proper divisors (1).

677612770397 is an equidigital number, since it uses as much as digits as its factorization.

677612770397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32672808, while the sum is 62.

The spelling of 677612770397 in words is "six hundred seventy-seven billion, six hundred twelve million, seven hundred seventy thousand, three hundred ninety-seven".