Search a number
-
+
70663970487 = 31120899102461
BaseRepresentation
bin100000111001111100…
…1101001111010110111
320202101200201122011010
41001303321221322313
52124204434023422
652243530043303
75051055560445
oct1016371517267
9222350648133
1070663970487
1127a71a72a10
1211841279533
136881b804b6
1435c4c91b95
151c88a67b0c
hex1073e69eb7

70663970487 has 16 divisors (see below), whose sum is σ = 102789878400. Its totient is φ = 42824181600.

The previous prime is 70663970449. The next prime is 70663970491. The reversal of 70663970487 is 78407936607.

It is not a de Polignac number, because 70663970487 - 210 = 70663969463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70663974487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638437 + ... + 740897.

It is an arithmetic number, because the mean of its divisors is an integer number (6424367400).

Almost surely, 270663970487 is an apocalyptic number.

70663970487 is a deficient number, since it is larger than the sum of its proper divisors (32125907913).

70663970487 is a wasteful number, since it uses less digits than its factorization.

70663970487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123374.

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 70663970487 in words is "seventy billion, six hundred sixty-three million, nine hundred seventy thousand, four hundred eighty-seven".

Divisors: 1 3 11 33 20899 62697 102461 229889 307383 689667 1127071 3381213 2141332439 6423997317 23554656829 70663970487