679070705477 has 2 divisors, whose sum is σ = 679070705478. Its totient is φ = 679070705476.

The previous prime is 679070705459. The next prime is 679070705491. The reversal of 679070705477 is 774507070976.

679070705477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656616881761 + 22453823716 = 810319^2 + 149846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679070705477 is a prime.

It is a super-2 number, since 2×679070705477² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679070705377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339535352738 + 339535352739.

It is an arithmetic number, because the mean of its divisors is an integer number (339535352739).

Almost surely, 2^679070705477 is an apocalyptic number.

It is an amenable number.

679070705477 is a deficient number, since it is larger than the sum of its proper divisors (1).

679070705477 is an equidigital number, since it uses as much as digits as its factorization.

679070705477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18151560, while the sum is 59.

The spelling of 679070705477 in words is "six hundred seventy-nine billion, seventy million, seven hundred five thousand, four hundred seventy-seven".