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669637146 = 23344932359
BaseRepresentation
bin100111111010011…
…101101000011010
31201200001002110210
4213322131220122
52332411342041
6150240351550
722410551613
oct4772355032
91650032423
10669637146
11313aa1332
121683155b6
13a896b1c9
1464d12c0a
153dbc6016
hex27e9da1a

669637146 has 16 divisors (see below), whose sum is σ = 1339704000. Its totient is φ = 223140768.

The previous prime is 669637109. The next prime is 669637181. The reversal of 669637146 is 641736966.

It is a junction number, because it is equal to n+sod(n) for n = 669637095 and 669637104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4515 + ... + 36873.

It is an arithmetic number, because the mean of its divisors is an integer number (83731500).

Almost surely, 2669637146 is an apocalyptic number.

669637146 is an abundant number, since it is smaller than the sum of its proper divisors (670066854).

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

669637146 is a wasteful number, since it uses less digits than its factorization.

669637146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35813.

The product of its digits is 979776, while the sum is 48.

The square root of 669637146 is about 25877.3481253393. The cubic root of 669637146 is about 874.8760187873.

The spelling of 669637146 in words is "six hundred sixty-nine million, six hundred thirty-seven thousand, one hundred forty-six".