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64213195 = 564319973
BaseRepresentation
bin1111010011110…
…1000011001011
311110211100221111
43310331003023
5112414310240
610212151151
71406542324
oct364750313
9143740844
1064213195
1133279362
12196084b7
13103c3897
14875744b
1559861ea
hex3d3d0cb

64213195 has 8 divisors (see below), whose sum is σ = 77179536. Its totient is φ = 51288096.

The previous prime is 64213159. The next prime is 64213211. The reversal of 64213195 is 59131246.

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 64213195 - 27 = 64213067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6772 + ... + 13201.

It is an arithmetic number, because the mean of its divisors is an integer number (9647442).

Almost surely, 264213195 is an apocalyptic number.

64213195 is a deficient number, since it is larger than the sum of its proper divisors (12966341).

64213195 is a wasteful number, since it uses less digits than its factorization.

64213195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20621.

The product of its digits is 6480, while the sum is 31.

The square root of 64213195 is about 8013.3136092381. The cubic root of 64213195 is about 400.4436639738.

The spelling of 64213195 in words is "sixty-four million, two hundred thirteen thousand, one hundred ninety-five".

Divisors: 1 5 643 3215 19973 99865 12842639 64213195