679449046653 has 12 divisors (see below), whose sum is σ = 1056920739420. Its totient is φ = 418122490176.

The previous prime is 679449046637. The next prime is 679449046663. The reversal of 679449046653 is 356640944976.

679449046653 is a `hidden beast` number, since 6 + 7 + 94 + 490 + 4 + 6 + 6 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 352583001369 + 326866045284 = 593787^2 + 571722^2 .

It is not a de Polignac number, because 679449046653 - 2⁴ = 679449046637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679449046663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2903628288 + ... + 2903628521.

It is an arithmetic number, because the mean of its divisors is an integer number (88076728285).

Almost surely, 2^679449046653 is an apocalyptic number.

It is an amenable number.

679449046653 is a deficient number, since it is larger than the sum of its proper divisors (377471692767).

679449046653 is a wasteful number, since it uses less digits than its factorization.

679449046653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807256828 (or 5807256825 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 63.

The spelling of 679449046653 in words is "six hundred seventy-nine billion, four hundred forty-nine million, forty-six thousand, six hundred fifty-three".