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70660849 = 729348083
BaseRepresentation
bin1000011011000…
…11001011110001
311220221221110111
410031203023301
5121042121344
611002301321
71515415210
oct415431361
9156857414
1070660849
11369825a6
121b7b7841
131184056c
149555077
15630b834
hex43632f1

70660849 has 8 divisors (see below), whose sum is σ = 83540160. Its totient is φ = 58477776.

The previous prime is 70660847. The next prime is 70660859. The reversal of 70660849 is 94806607.

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

It is not a de Polignac number, because 70660849 - 21 = 70660847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70660841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173839 + ... + 174244.

It is an arithmetic number, because the mean of its divisors is an integer number (10442520).

Almost surely, 270660849 is an apocalyptic number.

It is an amenable number.

70660849 is a deficient number, since it is larger than the sum of its proper divisors (12879311).

70660849 is a wasteful number, since it uses less digits than its factorization.

70660849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348119.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 70660849 is about 8406.0007732572. Note that the first 3 decimals coincide. The cubic root of 70660849 is about 413.4213972234.

The spelling of 70660849 in words is "seventy million, six hundred sixty thousand, eight hundred forty-nine".

Divisors: 1 7 29 203 348083 2436581 10094407 70660849