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61050665 = 5139111031
BaseRepresentation
bin1110100011100…
…0111100101001
311020212200202202
43220320330221
5111112110130
610020305545
71340631164
oct350707451
9136780682
1061050665
11315092a5
12185422b5
13c857270
148172adb
15555e145
hex3a38f29

61050665 has 16 divisors (see below), whose sum is σ = 79059456. Its totient is φ = 44990400.

The previous prime is 61050653. The next prime is 61050677. The reversal of 61050665 is 56605016.

It is an interprime number because it is at equal distance from previous prime (61050653) and next prime (61050677).

It is not a de Polignac number, because 61050665 - 212 = 61046569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58700 + ... + 59730.

It is an arithmetic number, because the mean of its divisors is an integer number (4941216).

Almost surely, 261050665 is an apocalyptic number.

61050665 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61050665 is a deficient number, since it is larger than the sum of its proper divisors (18008791).

61050665 is a wasteful number, since it uses less digits than its factorization.

61050665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61050665 is about 7813.4924969568. The cubic root of 61050665 is about 393.7586731944.

The spelling of 61050665 in words is "sixty-one million, fifty thousand, six hundred sixty-five".

Divisors: 1 5 13 65 911 1031 4555 5155 11843 13403 59215 67015 939241 4696205 12210133 61050665