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60195981 = 3103194809
BaseRepresentation
bin1110010110100…
…0010010001101
311012021021100210
43211220102031
5110402232411
65550113033
71330441326
oct345502215
9135237323
1060195981
1130a8514a
12181ab779
13c618231
147dcd44d
155440ca6
hex396848d

60195981 has 8 divisors (see below), whose sum is σ = 81040960. Its totient is φ = 39740832.

The previous prime is 60195977. The next prime is 60195983. The reversal of 60195981 is 18959106.

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

It is not a de Polignac number, because 60195981 - 22 = 60195977 is a prime.

It is a super-2 number, since 2×601959812 = 7247112257104722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60195983) 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, 97096 + ... + 97713.

It is an arithmetic number, because the mean of its divisors is an integer number (10130120).

Almost surely, 260195981 is an apocalyptic number.

It is an amenable number.

60195981 is a deficient number, since it is larger than the sum of its proper divisors (20844979).

60195981 is a wasteful number, since it uses less digits than its factorization.

60195981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194915.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 60195981 is about 7758.6068981487. The cubic root of 60195981 is about 391.9125451335.

The spelling of 60195981 in words is "sixty million, one hundred ninety-five thousand, nine hundred eighty-one".

Divisors: 1 3 103 309 194809 584427 20065327 60195981