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5645420646 = 237793120737
BaseRepresentation
bin1010100000111111…
…00100100001100110
3112120102212002020120
411100133210201212
543030211430041
62332104542410
7256620166215
oct52037444146
915512762216
105645420646
1124377690a8
121116781a06
136bc79b3b8
143b7aad07c
15230947366
hex1507e4866

5645420646 has 16 divisors (see below), whose sum is σ = 11292383664. Its totient is φ = 1881549824.

The previous prime is 5645420549. The next prime is 5645420647. The reversal of 5645420646 is 6460245465.

It is a junction number, because it is equal to n+sod(n) for n = 5645420598 and 5645420607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645420647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13611 + ... + 107126.

It is an arithmetic number, because the mean of its divisors is an integer number (705773979).

Almost surely, 25645420646 is an apocalyptic number.

5645420646 is an abundant number, since it is smaller than the sum of its proper divisors (5646963018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5645420646 is a wasteful number, since it uses less digits than its factorization.

5645420646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128535.

The product of its (nonzero) digits is 691200, while the sum is 42.

The square root of 5645420646 is about 75136.0143073879. The cubic root of 5645420646 is about 1780.5961734451.

The spelling of 5645420646 in words is "five billion, six hundred forty-five million, four hundred twenty thousand, six hundred forty-six".

Divisors: 1 2 3 6 7793 15586 23379 46758 120737 241474 362211 724422 940903441 1881806882 2822710323 5645420646