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11999977 = 111764171
BaseRepresentation
bin101101110001…
…101011101001
3211120122212121
4231301223221
511032444402
61105111241
7203666233
oct55615351
924518777
1011999977
116856840
124028521
132641ca2
141845253
1510c0837
hexb71ae9

11999977 has 8 divisors (see below), whose sum is σ = 13861152. Its totient is φ = 10267200.

The previous prime is 11999941. The next prime is 11999987. The reversal of 11999977 is 77999911.

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

It is a cyclic number.

It is not a de Polignac number, because 11999977 - 211 = 11997929 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11999927) 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, 31899 + ... + 32272.

It is an arithmetic number, because the mean of its divisors is an integer number (1732644).

Almost surely, 211999977 is an apocalyptic number.

11999977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11999977 is a deficient number, since it is larger than the sum of its proper divisors (1861175).

11999977 is a wasteful number, since it uses less digits than its factorization.

11999977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64199.

The product of its digits is 321489, while the sum is 52.

The square root of 11999977 is about 3464.0982953721. The cubic root of 11999977 is about 228.9427022415.

The spelling of 11999977 in words is "eleven million, nine hundred ninety-nine thousand, nine hundred seventy-seven".

Divisors: 1 11 17 187 64171 705881 1090907 11999977