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672164255 = 57178310771
BaseRepresentation
bin101000000100000…
…110100110011111
31201211210111000102
4220010012212133
52334033224010
6150410451315
722441205360
oct5004064637
91654714012
10672164255
11315467a54
12169133b3b
13a9344539
14653adb67
153e024ba5
hex2810699f

672164255 has 16 divisors (see below), whose sum is σ = 922427904. Its totient is φ = 460611360.

The previous prime is 672164231. The next prime is 672164267. The reversal of 672164255 is 552461276.

It is not a de Polignac number, because 672164255 - 210 = 672163231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57020 + ... + 67790.

It is an arithmetic number, because the mean of its divisors is an integer number (57651744).

Almost surely, 2672164255 is an apocalyptic number.

672164255 is a deficient number, since it is larger than the sum of its proper divisors (250263649).

672164255 is a wasteful number, since it uses less digits than its factorization.

672164255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566.

The product of its digits is 100800, while the sum is 38.

The square root of 672164255 is about 25926.1307371540. The cubic root of 672164255 is about 875.9751870365.

The spelling of 672164255 in words is "six hundred seventy-two million, one hundred sixty-four thousand, two hundred fifty-five".

Divisors: 1 5 7 35 1783 8915 10771 12481 53855 62405 75397 376985 19204693 96023465 134432851 672164255