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1664714954 = 27118908211
BaseRepresentation
bin110001100111001…
…1000100011001010
311022000110021121102
41203032120203022
511402131334304
6433104341402
756152562240
oct14316304312
94260407542
101664714954
11784762a91
123a5614862
13206b73b46
1411b13c790
159b233d1e
hex633988ca

1664714954 has 8 divisors (see below), whose sum is σ = 2853797088. Its totient is φ = 713449260.

The previous prime is 1664714929. The next prime is 1664714957. The reversal of 1664714954 is 4594174661.

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

It is a junction number, because it is equal to n+sod(n) for n = 1664714899 and 1664714908.

It is not an unprimeable number, because it can be changed into a prime (1664714957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59454092 + ... + 59454119.

It is an arithmetic number, because the mean of its divisors is an integer number (356724636).

Almost surely, 21664714954 is an apocalyptic number.

1664714954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1664714954 is a deficient number, since it is larger than the sum of its proper divisors (1189082134).

1664714954 is a wasteful number, since it uses less digits than its factorization.

1664714954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118908220.

The product of its digits is 725760, while the sum is 47.

The square root of 1664714954 is about 40800.9185435818. The cubic root of 1664714954 is about 1185.1681184799.

The spelling of 1664714954 in words is "one billion, six hundred sixty-four million, seven hundred fourteen thousand, nine hundred fifty-four".

Divisors: 1 2 7 14 118908211 237816422 832357477 1664714954