626649780065 has 8 divisors (see below), whose sum is σ = 752441933760. Its totient is φ = 501011692272.

The previous prime is 626649780047. The next prime is 626649780077. The reversal of 626649780065 is 560087946626.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 626649780065 - 2¹⁴ = 626649763681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 626649779986 and 626649780013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38507525 + ... + 38523794.

It is an arithmetic number, because the mean of its divisors is an integer number (94055241720).

Almost surely, 2^626649780065 is an apocalyptic number.

It is an amenable number.

626649780065 is a deficient number, since it is larger than the sum of its proper divisors (125792153695).

626649780065 is a wasteful number, since it uses less digits than its factorization.

626649780065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77032951.

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 626649780065 in words is "six hundred twenty-six billion, six hundred forty-nine million, seven hundred eighty thousand, sixty-five".