3620788648569 has 9 divisors (see below), whose sum is σ = 5230036293573. Its totient is φ = 2413855293372.

The previous prime is 3620788648559. The next prime is 3620788648583. The reversal of 3620788648569 is 9658468870263.

The square root of 3620788648569 is 1902837.

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

3620788648569 is a `hidden beast` number, since 3 + 6 + 2 + 0 + 7 + 8 + 86 + 485 + 69 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 3620788648569 - 2⁷ = 3620788648441 is a prime.

It is a super-2 number, since 2×3620788648569² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3620788648497 and 3620788648506.

It is not an unprimeable number, because it can be changed into a prime (3620788648559) 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, 5391372 + ... + 6025650.

Almost surely, 2^{3620788648569} is an apocalyptic number.

3620788648569 is the 1902837-th square number.

3620788648569 is the 951419-th centered octagonal number.

It is an amenable number.

3620788648569 is a deficient number, since it is larger than the sum of its proper divisors (1609247645004).

3620788648569 is an frugal number, since it uses more digits than its factorization.

3620788648569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268564 (or 634282 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 72.

The spelling of 3620788648569 in words is "three trillion, six hundred twenty billion, seven hundred eighty-eight million, six hundred forty-eight thousand, five hundred sixty-nine".