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64068445 = 574144647
BaseRepresentation
bin1111010001100…
…1101101011101
311110120000101101
43310121231131
5112400142240
610205113101
71405400320
oct364315535
9143500341
1064068445
113318a631
1219558791
1310372a2c
14871a7b7
15595839a
hex3d19b5d

64068445 has 16 divisors (see below), whose sum is σ = 90010368. Its totient is φ = 42860160.

The previous prime is 64068443. The next prime is 64068451. The reversal of 64068445 is 54486046.

It is not a de Polignac number, because 64068445 - 21 = 64068443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64068443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20889 + ... + 23758.

It is an arithmetic number, because the mean of its divisors is an integer number (5625648).

Almost surely, 264068445 is an apocalyptic number.

It is an amenable number.

64068445 is a deficient number, since it is larger than the sum of its proper divisors (25941923).

64068445 is a wasteful number, since it uses less digits than its factorization.

64068445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44700.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 64068445 is about 8004.2766693812. The cubic root of 64068445 is about 400.1425429477.

The spelling of 64068445 in words is "sixty-four million, sixty-eight thousand, four hundred forty-five".

Divisors: 1 5 7 35 41 205 287 1435 44647 223235 312529 1562645 1830527 9152635 12813689 64068445