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70957660 = 22517208699
BaseRepresentation
bin1000011101010…
…11101001011100
311221112000121111
410032223221130
5121131121120
611012511404
71521062434
oct416535134
9157460544
1070957660
11370655a4
121b91b564
13119156a7
1495d12c4
15636975a
hex43aba5c

70957660 has 24 divisors (see below), whose sum is σ = 157777200. Its totient is φ = 26713344.

The previous prime is 70957631. The next prime is 70957661. The reversal of 70957660 is 6675907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70957661) 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, 104010 + ... + 104689.

It is an arithmetic number, because the mean of its divisors is an integer number (6574050).

Almost surely, 270957660 is an apocalyptic number.

It is an amenable number.

70957660 is an abundant number, since it is smaller than the sum of its proper divisors (86819540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70957660 is a wasteful number, since it uses less digits than its factorization.

70957660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208725 (or 208723 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 70957660 is about 8423.6369817318. The cubic root of 70957660 is about 413.9994476721. Note that the first 3 decimals are identical.

It can be divided in two parts, 70957 and 660, that added together give a palindrome (71617).

The spelling of 70957660 in words is "seventy million, nine hundred fifty-seven thousand, six hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 208699 417398 834796 1043495 2086990 3547883 4173980 7095766 14191532 17739415 35478830 70957660