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75016705 = 538938569
BaseRepresentation
bin1000111100010…
…10101000000001
312020011020120111
410132022220001
5123201013310
611235511321
71600426411
oct436125001
9166136514
1075016705
1139388185
1221158541
13127070aa
149d6a641
1568bc28a
hex478aa01

75016705 has 8 divisors (see below), whose sum is σ = 90253800. Its totient is φ = 59857536.

The previous prime is 75016703. The next prime is 75016709. The reversal of 75016705 is 50761057.

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 69872881 = 2268^2 + 8359^2 .

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 75016705 - 21 = 75016703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75016703) 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, 17340 + ... + 21229.

It is an arithmetic number, because the mean of its divisors is an integer number (11281725).

Almost surely, 275016705 is an apocalyptic number.

It is an amenable number.

75016705 is a deficient number, since it is larger than the sum of its proper divisors (15237095).

75016705 is a wasteful number, since it uses less digits than its factorization.

75016705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38963.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 75016705 is about 8661.2184477705. The cubic root of 75016705 is about 421.7476404214.

The spelling of 75016705 in words is "seventy-five million, sixteen thousand, seven hundred five".

Divisors: 1 5 389 1945 38569 192845 15003341 75016705