67960840249 has 9 divisors (see below), whose sum is σ = 68654185509. Its totient is φ = 67274435580.

The previous prime is 67960840237. The next prime is 67960840253. The reversal of 67960840249 is 94204806976.

It is a happy number.

The square root of 67960840249 is 260693.

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

It is not a de Polignac number, because 67960840249 - 2⁵ = 67960840217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67960840249.

It is not an unprimeable number, because it can be changed into a prime (67960840349) 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, 26850114 + ... + 26852644.

Almost surely, 2^67960840249 is an apocalyptic number.

67960840249 is the 260693-rd square number.

67960840249 is the 130347-th centered octagonal number.

It is an amenable number.

67960840249 is a deficient number, since it is larger than the sum of its proper divisors (693345260).

67960840249 is an frugal number, since it uses more digits than its factorization.

67960840249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

It can be divided in two parts, 67960 and 840249, that added together give a square (908209 = 953²).

The spelling of 67960840249 in words is "sixty-seven billion, nine hundred sixty million, eight hundred forty thousand, two hundred forty-nine".