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70745553 = 327860617
BaseRepresentation
bin1000011011101…
…11110111010001
311221010020122200
410031313313101
5121102324203
611004153413
71516220154
oct415676721
9157106580
1070745553
1136a301aa
121b838869
131186cc98
149577c9b
1563269a3
hex4377dd1

70745553 has 6 divisors (see below), whose sum is σ = 102188034. Its totient is φ = 47163696.

The previous prime is 70745533. The next prime is 70745561. The reversal of 70745553 is 35554707.

It can be written as a sum of positive squares in only one way, i.e., 35426304 + 35319249 = 5952^2 + 5943^2 .

It is not a de Polignac number, because 70745553 - 210 = 70744529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70745533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3930300 + ... + 3930317.

It is an arithmetic number, because the mean of its divisors is an integer number (17031339).

Almost surely, 270745553 is an apocalyptic number.

It is an amenable number.

70745553 is a deficient number, since it is larger than the sum of its proper divisors (31442481).

70745553 is a wasteful number, since it uses less digits than its factorization.

70745553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860623 (or 7860620 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 70745553 is about 8411.0375697651. The cubic root of 70745553 is about 413.5865262076.

The spelling of 70745553 in words is "seventy million, seven hundred forty-five thousand, five hundred fifty-three".

Divisors: 1 3 9 7860617 23581851 70745553